Energizer A27 Battery
Energizer A27 Battery is a miniature 12V alkaline battery designed for compact medical devices requiring high voltage in a small form factor. Key specifications: 12V nominal output; 27 mAh capacity; 8mm diameter; 28.2mm height; 4.4g weight; and 3-year shelf life at 21°C . Features zero added mercury construction with high reliability and leakage resistance . Replacement compatibility includes 27A, A27BP, G27A, GP27A, L828, and MN27 . For clinicians, this battery powers digital thermometers, blood pressure monitors, glucose monitors, and medical alert transmitters. Contains zero added mercury. Ingestion requires immediate medical attention (800-498-8666).
ENERGIZER A27 BATTERY
PRIMARY USES
1. Reliable High-Voltage Power for Compact Medical Diagnostic Devices
Primary Use: Provides stable 12V DC power for compact medical diagnostic equipment including digital thermometers, blood pressure monitors, glucose monitors, and other handheld medical devices requiring high voltage in a miniature form factor .
How it helps: For the primary care physician and clinical equipment manager, portable diagnostic devices require compact power sources that deliver consistent voltage for accurate readings. The Energizer A27 miniature alkaline battery delivers a nominal voltage of 12V with a capacity of 27 mAh . Its miniature dimensions (8mm diameter x 28.2mm height, weighing only 4.4g) allow it to fit into small, handheld medical equipment where larger batteries cannot be accommodated . For the patient and clinician, this means reliable power for compact diagnostic devices without compromising portability or accuracy.
2. Long Shelf Life for Backup Medical Equipment and Emergency Preparedness
Primary Use: Provides up to 3 years of shelf life at 21°C, making these batteries suitable for backup medical alert transmitters, emergency call systems, and home healthcare preparedness kits where infrequent replacement and immediate readiness are important .
How it helps: For the home health nurse and discharge planner, medical devices are often stored for extended periods before activation or use. The Energizer A27 battery holds power for up to three years in storage, ensuring it is ready when needed . The battery’s unique sealing structure provides excellent shelf life and resistance to leakage . For the patient and caregiver, this means confidence that their medical monitoring equipment will function when called upon, with less frequent battery replacement requirements.
3. Power Source for Wireless Medical Alert and Security Transmitters
Primary Use: Powers wireless medical alert transmitters, personal emergency response system (PERS) pendants, and security devices where compact size and 12V output are required for reliable signal transmission .
How it helps: For the geriatrician and home health nurse, ensuring that medical alert devices function reliably is critical for patient safety and independent living. The Energizer A27 delivers high voltage output in a compact form factor, making it the standard power source for many wireless transmitters and electronic remotes . The alkaline manganese dioxide chemistry provides high energy density and low self-discharge, ensuring consistent performance . For the patient living independently, this means confidence that an emergency call will be transmitted when the button is pressed.
4. Zero-Mercury Construction for Environmentally Responsible Healthcare
Primary Use: Contains zero added mercury and is designed for high reliability with resistance to leakage, complying with environmental regulations for disposal and reducing toxic exposure risk in healthcare settings .
How it helps: For the healthcare facility environmental safety officer, eliminating mercury from batteries reduces hazardous waste disposal requirements and environmental impact. The Energizer A27 is built with zero mercury content, making it more environmentally friendly . The high reliability design with leakage resistance protects sensitive medical equipment from corrosive damage . For the healthcare facility, this means simplified disposal procedures and reduced environmental impact while maintaining high-performance standards for medical equipment power.
SECONDARY USES
1. Powering remote keyless entry systems for medical fleet vehicles: For healthcare facilities with vehicle fleets, these batteries power car key remotes and security fobs used to access medical transport vehicles, delivery vans, and emergency response cars.
2. Operation of wireless remote controls for medical equipment: Powers remote controls for hospital beds, adjustable examination tables, therapeutic chairs, and other medical equipment where wireless convenience improves clinical workflow.
3. Powering portable electronic devices in home healthcare: For patients receiving home care, these batteries power glucometers, blood pressure wrist cuffs, digital thermometers, and other portable monitoring devices requiring compact A27 batteries .
4. Operation of small digital timers and interval counters in physical therapy: Powers digital timers used in rehabilitation timing, exercise interval tracking, and physical therapy equipment where the compact A27 battery is specified.
5. Wireless headsets and communication devices for clinical staff: Powers wireless headsets used by medical receptionists, call center staff, and clinical personnel requiring hands-free communication throughout healthcare facilities.
1. BASIC IDENTIFICATION ATTRIBUTES
-
Device Type: Disposable, single-use, miniature alkaline battery, non-rechargeable .
-
Designation: Energizer A27, A27BP, 639333, E300832500 .
-
Key Components: Alkaline manganese dioxide (Zn/MnO₂) chemistry. Zero added mercury .
-
Replacement Compatibility: 27A, A27BP, G27A, GP27A, L828, MN27 .
-
Unique Feature: 12V output in miniature form factor (8mm x 28.2mm); 3-year shelf life; zero-mercury construction.
2. TECHNICAL & PERFORMANCE PROPERTIES
-
Nominal Voltage: 12 volts .
-
Physical Dimensions: Diameter 8 mm (0.31 inches); Height 28.2 mm (1.11 inches) .
-
Weight: 4.4 grams (0.16 oz.) .
-
Capacity: 27 mAh .
-
Terminal Type: Raised positive, flat negative .
-
Battery Chemistry: Manganese Dioxide (Alkaline) .
-
IEC Code: 8LR732 .
-
Shelf Life: 3 years at 21°C .
-
Leakage Protection: High reliability construction with resistance to leakage .
3. PHYSICAL & OPERATIONAL PROPERTIES
-
Preparation: Remove from packaging. Check expiration date. No preparation required.
-
Usage Instructions: Insert battery matching polarity (+ and -) as indicated in device. Replace all batteries in a device at the same time. Do not mix old and new batteries. Do not mix different battery types or brands. Remove used batteries promptly .
-
Storage Conditions: Store in a cool, dry, well-ventilated area. Elevated temperatures shorten battery life. Do not store in direct sunlight or near heat sources. Avoid storage in high-humidity environments.
-
Portion Size: One A27 cell per device (most devices use a single battery).
4. SAFETY & COMPLIANCE ATTRIBUTES
-
Allergens: None. No latex. No known allergens in battery construction.
-
Ingestion Hazard: Immediate medical emergency. A27 batteries are small enough to be swallowed by infants and young children and can cause severe esophageal burns within 2 hours .
-
Battery Ingestion Hotline: Call 800-498-8666 (US) or 202-625-3333 (collect) immediately for battery ingestion .
-
Choking Hazard: A27 miniature batteries can lodge in the esophagus of infants and small children if swallowed. Keep out of reach of children .
-
Leakage: High reliability construction provides leakage resistance. If leakage occurs, potassium hydroxide can cause skin and eye burns.
-
Short Circuit: Do not short circuit terminals. Prolonged short circuit can cause battery to lose energy and generate heat.
-
Disposal: Contains zero added mercury. Dispose in accordance with local regulations. Do not dispose of in general waste .
-
Quality Assurance: Manufactured under ISO and ANSI standards.
5. STORAGE & HANDLING ATTRIBUTES
-
Storage: Store in cool, dry, well-ventilated area away from direct sunlight, heat sources, and humidity. Elevated temperatures result in shortened battery life .
-
Shelf Life: 3 years at 21°C. Check expiration date printed on package .
-
Inspection: Do not use batteries that are leaking, corroded, swollen, or have damaged packaging. Do not use expired batteries.
-
Handling: Do not install backwards. Do not short circuit terminals. Do not crush, puncture, or disassemble. Do not expose to fire or temperatures above manufacturer limits.
1. SAFETY PRECAUTIONS
-
Battery ingestion: A27 miniature batteries are a serious ingestion hazard for infants and young children due to their small size. If a battery is swallowed, it can become lodged in the esophagus and cause severe injury within 2 hours. Seek immediate medical attention. Call the National Battery Ingestion Hotline at 800-498-8666 (US) or 202-625-3333 (collect) day or night for advice and follow-up .
-
Do not ingest: Battery contains potassium hydroxide which is corrosive and toxic if ingested .
-
Do not install backwards: Reversing polarity can cause leakage, rupture, or fire. Inadvertent charging can occur if battery is installed backwards .
-
Do not charge: These batteries are not designed for recharging. Recharging can cause battery leakage, explosion, or fire .
-
Do not short circuit: Short circuit can cause the battery to lose energy and generate significant heat.
-
Do not disassemble, crush, puncture, or incinerate: Damaging a battery may result in internal short circuit, fire, or exposure to internal components .
-
Do not mix battery types: Do not mix old and new batteries, different brands, or different chemistries in the same device .
-
Do not expose to extreme heat: Do not place in fire, oven, microwave, or direct sunlight .
-
Replace all batteries at the same time: Replacing only some batteries can cause leakage or reduced performance.
-
Keep out of reach of children: Store batteries in original packaging or in a secure container that children cannot open. Keep new and used batteries out of reach of children at all times .
-
Leakage precautions: If a battery leaks, avoid contact with skin, eyes, and clothing. Potassium hydroxide can cause burns. Ventilate area.
2. FIRST AID MEASURES
-
Ingestion: Do not induce vomiting. Do not give food or drink. Seek immediate medical attention. Call the National Battery Ingestion Hotline at 800-498-8666 (US) or 202-625-3333 (collect) day or night for advice and follow-up .
-
Eye contact (battery leakage/rupture): Contents of an open battery can cause severe eye irritation. If battery ruptures and contents contact eyes, rinse immediately with plenty of lukewarm water for a minimum of 15 minutes. Get immediate medical attention.
-
Skin contact (battery leakage/rupture): Contents of an open battery can cause skin irritation. Wash skin with soap and water for at least 15 minutes. If irritation persists, seek medical attention.
-
Inhalation (battery leakage/rupture): Contents of an open battery can cause respiratory irritation. Move to fresh air. If symptoms persist, seek medical attention.
-
If you suspect a battery has been swallowed or inserted: Act fast - severe or fatal injuries can occur within 2 hours. Seek immediate medical attention .
3. FIRE FIGHTING MEASURES
-
Flammability: Alkaline batteries are combustible. Will burn if exposed to open flame.
-
Extinguishing Media: Use water spray, foam, dry chemical powder, or carbon dioxide (CO₂).
-
Fire Response: Cool exterior of batteries if exposed to fire to prevent rupture. For small fires, use an appropriate extinguisher. For large fires, evacuate the area. Firefighters should wear self-contained breathing apparatus (SCBA) and full protective gear.
Related products
Energizer AA Battery
Energizer AA Battery are available in two primary chemistries for medical applications. Alkaline AA (model X91, E91) provides a nominal 1.5V output, 23g weight, 150-300 milliohm internal resistance, and 7-year shelf life, with zero added mercury. Ultimate Lithium AA (model L91) provides 1.5V output, 15g weight, operates from -40°C to 60°C, offers 3000 mAh capacity, 2.5A continuous discharge, and 25-year shelf life. Both are manufactured under ANSI and IEC standards (ANSI-15A, IEC-LR6 for alkaline; ANSI-15-LF, IEC-FR6 for lithium). For clinicians, alkaline AA is recommended for Medtronic insulin pumps; lithium AA is indicated for high-drain, extreme-temperature, or long-storage applications. Contains zero added mercury or cadmium. Ingestion requires immediate medical attention (800-498-8666).
Energizer AA Charger +2 Battery
Energizer AA Charger +2 Battery is a value-priced battery charger kit designed for NiMH AA rechargeable batteries, ideal for home healthcare and clinical settings using daily blood pressure monitors, pulse oximeters, and portable diagnostic equipment. The kit includes 2 Energizer Recharge Universal AA batteries (2000 mAh capacity, pre-charged and ready to use) and a basic charger capable of charging 2 or 4 AA or AAA NiMH batteries simultaneously. Key specifications: 200mA charging output for AA; 24-hour charge cycle; LED operational indicator; 100-240V AC universal input; Dimensions: 118 x 75 x 67 mm; Weight: 225g. The included batteries feature leak-protection design to safeguard sensitive medical devices from damaging leaks under normal use conditions. For clinicians, this charger is indicated for NiMH batteries only—do not use with alkaline, carbon zinc, lithium, or NiCd batteries. WARNING: For indoor use only. Not intended for use by young children without supervision. Plug directly into wall outlet—never use extension cords.
ENERGIZER PRO SERIES FOCUSING HYBRID HEADLAMP (500 LUMEN)
Energizer Pro Series Focusing Hybrid Headlamp delivers (500 lumens) of hands-free LED light with Digital Focus Technology for seamless beam adjustment from flood to spot. Features 6 light modes including green for night vision, high CRI 90 for accurate colour rendering, pivoting head, IP67 waterproof/dust-tight rating, shatterproof lens, and 2-metre impact resistance. Hybrid power system operates on rechargeable battery or 3 AAA batteries. Suitable for clinical examinations, wound assessment, disaster response, night rounds, and low-resource settings. Warning: Keep batteries away from children. If swallowed, seek immediate medical attention (202-625-3333).
Energizer Recharge AA Battery
Energizer Recharge AA Battery is a nickel-metal hydride (NiMH) rechargeable battery designed for high-drain medical devices including blood pressure monitors, pulse oximeters, thermometers, and portable nebulizers . Key specifications: 1.2V nominal voltage; capacities ranging from 2000 mAh (Universal) to 2500 mAh (Power Plus/Extreme); AA size (LR6 equivalent); NiMH chemistry; pre-charged and ready to use with 12-month charge retention . Universal variant offers up to 1,000 recharge cycles, while Power Plus offers up to 500 cycles, both with up to 5 years total usable life under typical usage patterns . Features leak-protection design. Available with recycled battery content: Extreme (22% recycled), Accu Recharge Professional (15% recycled), Universal (7% recycled) . Packaging is 100% recyclable and plastic-free. For clinicians, this battery is indicated for any AA-powered medical device with moderate to high power requirements where frequent use justifies rechargeable technology. WARNING: Keep away from small children. If swallowed, promptly see doctor; have doctor phone (202) 625-3333 collect.
Energizer Recharge AAA Battery
Energizer Recharge AAA Battery is a nickel-metal hydride (NiMH) rechargeable battery designed for high-drain medical devices including blood pressure monitors, pulse oximeters, thermometers, and portable nebulizers . Key specifications: 1.2V nominal voltage; capacities of 700-850 mAh depending on variant (Standard, Power Plus, Extreme, Universal); AAA size; NiMH chemistry; pre-charged and ready to use with 12-month charge retention ; can be recharged hundreds of times (up to 500 cycles for Power Plus) with total lifespan up to 5 years ; features leak-protection design . Available in variants with recycled battery content: Extreme (22% recycled), Accu Recharge Professional (15% recycled), Universal (7% recycled). For clinicians, this battery is indicated for any AAA-powered medical device with moderate to high power requirements where frequent use justifies rechargeable technology . WARNING: Keep away from small children. If swallowed, promptly see doctor; have doctor phone (202) 625-3333 collect.
Eveready AA Red Battery
Eveready AA Red Battery is a carbon zinc (zinc chloride) primary battery designed for low-drain medical devices including blood pressure monitors, basic diagnostic equipment, and portable radios. Key specifications: 1.5V nominal voltage; average capacity of 1,100 mAh (rated at 25 mA continuous at 21°C to 0.8V cutoff); AA size; IEC R6 designation; ANSI 15D; zinc-manganese dioxide chemistry; operating temperature -18°C to 55°C (0°F to 130°F); average weight 15.0 grams; volume 8.0 cubic centimeters; and 3-year shelf life at 21°C . Features leak-resistant construction with guarantee based on IEC standard service tests, zero added mercury and cadmium, and Quality Seal for Trusted Power . For clinicians, this battery is indicated for low-drain medical equipment where cost-effective power is prioritised over high-drain performance, suitable for intermittent-use devices and backup equipment in clinic and home healthcare settings. WARNING: Keep away from small children. If swallowed, promptly see doctor; have doctor phone (202) 625-3333 collect.
Eveready AAA Red Battery
Eveready AAA Red Battery is a carbon zinc (zinc chloride) primary battery designed for low-drain medical devices including blood pressure monitors, basic diagnostic equipment, and portable radios . Key specifications: 1.5V nominal voltage; 540 mAh capacity rated at 25 mA continuous at 21°C to 0.8V cutoff ; AAA size; IEC R03 designation; ANSI 24D; operating temperature -18°C to 55°C (0°F to 130°F); average weight 9.7 grams; volume 4.0 cubic centimeters; and 3-year shelf life at 21°C . Features leak-resistant construction, zero added mercury and cadmium, and metal jacket construction . For clinicians, this battery is indicated for low-drain medical equipment where cost-effective power is prioritised over high-drain performance, suitable for intermittent-use devices and backup equipment in clinic and home healthcare settings. WARNING: Keep away from small children. If swallowed, promptly see doctor; have doctor phone (202) 625-3333 collect .
Eveready Size D Red Battery
Eveready Size D Red Battery is a carbon zinc (zinc chloride) primary battery designed for low-drain devices including blood pressure monitors, basic diagnostic equipment, flashlights, lanterns, and radios . Key specifications: 1.5V nominal voltage; 8000 mAh capacity; D size (R20); IEC R20 designation; ANSI-13D; carbon zinc chemistry; leak-resistant construction; zero added mercury and cadmium; weight approximately 89-100g; dimensions 34.2mm diameter x 61.5mm height; and 3-year shelf life at 21°C . Operating temperature range: -18°C to 55°C (0°F to 130°F) . Features the Quality Seal for Trusted Power . For clinicians, this battery is indicated for low-drain medical equipment where cost-effective power is prioritised over high-drain performance, suitable for intermittent-use devices and backup equipment in clinic and home healthcare settings. WARNING: Keep away from small children. If swallowed, promptly see doctor; have doctor phone (202) 625-3333 collect.

Atta, Flours & Sooji
Wheat Atta
Sooji (Semolina)
Organic Flours
Besan (Gram Flour)
Rice Flour
Rice & Rice Products
Rice Cakes
Poha (Flattened Rice)
Brown & Red Rice
Basmati Rice
Non-Basmati Rice
Dals & Pulses
Whole Pulses (Rajma, Chana)
Masoor Dal
Chana Dal
Toor Dal
Moong Dal
Edible Oils
Blended Oils
Coconut Oil
Soybean Oil
Mustard Oil
Olive Oil
Sunflower Oil
Salt, Sugar & Jaggery
White & Brown Sugar
Sea Salt & Himalayan Salt
Table Salt
Jaggery (Powdered & Block)
Spices & Seasonings
Herbs & Seasoning Packets
Spice Blends (Masalas)
Whole Spices
Powdered Spices
Sauces, Spreads & Condiments
Honey, Jam & Spreads
Soy & Chili Sauce
Chutneys
Pickles
Tomato Ketchup
Mayonnaise & Dressings
Breakfast Cereals
Oats & Muesli
Granola
Cornflakes
Tea
Tea Bags
Herbal & Specialty Tea
Green Tea
Black Tea
Coffee
Instant Coffee
Ground Coffee
Coffee Beans
Health & Energy Drinks
Health Supplements Drinks
Energy Drinks
Protein Shakes
Fruit Juices & Drinks
Coconut Water
Nectars & Juice Drinks
100% Juices
Soft Drinks & Sodas
Cola
Diet Sodas
Fruit Sodas
Lemonade
Water
Sparkling Water
Packaged Drinking Water
Flavored Water
Namkeen & Savory Snacks
Extruded Snacks
Mixtures & Bhujia
Chips & Crisps
Biscuits & Cookies
Cookies
Digestive & Marie
Glucose Biscuits
Cream Biscuits
Chocolates & Candies
Sweets & Bubble Gum
Toffees & Hard Candies
Chocolate Bars
Boxed Chocolates
Cakes & Pastries
Pastries & Danish
Cupcakes
Birthday & Celebration Cakes
Desserts & Ice Cream Toppings
Caramel & Fruit Toppings
Chocolate Syrup & Sauce
Whipped Cream
Sprinkles & Nuts
Nuts & Dry Fruits
Raisins & Apricots
Roasted & Salted Nuts
Almonds, Cashews, Walnuts
Milk
Fresh Milk (Full Cream, Toned)
Flavored Milk
Butter & Margarine
Margarine
Salted & Unsalted Butter
Cheese
Sliced Cheese
Paneer (Cottage Cheese)
Cream Cheese & Spreads
Cheese Blocks (Cheddar, Mozzarella)
Yogurt & Curd
Set Curd
Yogurt Drinks (Lassi, Chaas)
Greek Yogurt
Flavored Yogurt
Cream & Desserts
Custards & Mousses
Fresh Cream
Eggs
Organic Eggs
Brown Eggs
Farm Eggs
Frozen Vegetables
Peas, Corn, Mix Veg
Frozen Snacks & Appetizers
Samosas & Spring Rolls
Nuggets & Finger Foods
Frozen Meat & Poultry
Frozen Sausages & Hot Dogs
Frozen Pork
Frozen Chicken
Frozen Beef
Frozen Meat Blends & Mince
Frozen Seafood
Frozen Fish Fillets
Frozen Seafood Mixes
Ice Cream & Frozen Desserts
Sorbets & Gelato
Ice Cream Tubs
Ice Cream Bars & Cones
Oral Care
Mouthwash
Toothpaste
Toothbrushes (Manual & Electric)
Bath & Body
Deodorants & Antiperspirants
Body Lotions & Moisturizers
Soaps & Body Wash
Hair Care
Styling Products (Gel, Wax, Spray)
Hair Oils
Shampoo & Conditioner
Skincare
Lip Balm
Moisturizers & Creams
Face Wash & Cleansers
Feminine Hygiene
Tampons
Sanitary Pads
Shaving Needs
Razors & Blades
Shaving Cream & Foam
Vitamins & Supplements
Multivitamins
Protein Powder
Specialty Supplements (Omega-3, Calcium)
Ayurveda & Herbal
Herbal Supplements
Chyawanprash
Weight Management
Fitness & Workout Accessories
Protein Shakes & Powders
Sports Nutrition
Energy Bars & Snacks
Electrolyte & Hydration Drinks
Sports Multivitamins
Protein Powders & Shakes
Dishwashing
Dishwashing Bars & Liquid
Dishwasher Detergents
Laundry
Fabric Softeners & Whiteners
Detergent Powder & Liquid
Detergent Bars
Floor & Surface Cleaners
Glass & Mirror Cleaners
All-Purpose Cleaners
Floor Cleaners (Liquid, Powder)
Toilet Cleaners
Toilet Cleaning Tablets
Toilet Brush & Cleaner Sets
Liquid Toilet Cleaners
Insecticides & Repellents
Ant & Cockroach Killers
Mosquito Repellents (Coils, Mats, Sprays)
Air Fresheners & Fragrances
Car Air Fresheners
Essential Oils & Diffusers
Plug-In Air Fresheners
Scented Candles
Room Sprays
Paper Products
Tissues & Napkins
Kitchen Towels
Toilet Paper
Baby Food & Formula
Cereals & Purees
Infant Formula
Diapers & Wipes
Baby Wipes
Disposable Diapers
Baby Bath & Skincare
Diaper Rash Cream
Baby Soap & Shampoo
Baby Lotion & Oil
Dog Food
Dry Dog Food
Dog Treats
Wet Dog Food
Pet Grooming
Shampoos & Conditioners
Brushes & Combs
Flea & Tick Control
Grooming Tools & Kits
Pet Accessories
Litter & Trays (for cats)
Collars & Leashes
Toys & Chew Toys
Bowls & Feeders
Cat Food
Wet Cat Food
Cat Treats
Dry Cat Food
Organic Products
Organic Beverages
Organic Supplements
Organic Food & Snacks
Gluten-Free
Gluten-Free Beverages
Gluten-Free Snacks
Gluten-Free Pasta & Grains
Gluten-Free Breads & Bakery
Vegan Products
Vegan Supplements
Vegan Food & Snacks
Vegan Beverages
Sugar-Free & No Added Sugar
Sugar-Free Beverages
Sugar-Free Snacks
Sugar-Free Desserts & Sweets
Keto-Friendly
Keto Beverages
Keto Supplements
Keto Snacks
Diabetic-Friendly
Diabetic-Friendly Supplements
Diabetic-Friendly Health Monitors & Devices