Best 4 V Batteries in 2026

Super Capacity-2800mAh 1.2V NI-MH Rechargeable AA Batteries, supply power for a long time

AA AAA rechargeable batteries can be charged separately, not necessarily in pairs.16 LED lights around display the charging process. Red: Charging (The light will flash every one minute) Green: Fully charged

BONAI battery with high-quality Built-in Core, super high capacity, up to 1200 recharge cycle, long service time and advanced low self-discharge, maintain 75% capacity after 3 years no use

Super Capacity-2800mAh Rechargeable AA Batteries 1.2V & 1100mAh Rechargeable AAA Batteries 1.2V, supply power for a long time.

Rechargeable batteries Charger with Independent-Slot Design,16 slots with 16 LED indicators around displaying the charging process, easily pop Batteries in and out and not worry about having them in pairs.

Bonai rechargeable batteries using High-quality built-in core with the NEW manufacturing process, up to 1200 times cycle. Even if it is charged every day,it can be used for more than 3 years.

Package Contents : 16 Pack 2800mAh 1.2V NiMh AA rechargeable batteries

Recycle Times: Can be charged up to 1200 times, save money from buying huge of one-time used batteries

Low Self-discharge: It will still maintain 80% of initial capacity after 3 years of non-use,battery is precharged.it’s recommended to be fully charged every 3 months that Better for longer battery life

【Trustworthy Quality】We has been in the field of battery for more than 10 years. In the selection of materials, process manufacturing, and quality control, there has always been a professional high standard to ensure maximum performance of the cr2016 battery

【Safe & Leak-proof】Zero mercury harmless design is the basis of Bonai cr2016 3v battery. Innovating sealing technology can effectively prevent leakage and protect equipment during use

【Long lasting & Stable】The high energy density enables the cr2016 lithium batteries to support your devices for a long time. Premium cr2016 3v battery could continuously supply stable output for your car remote key, key fobs, watches, calculators, medical devices, and more.

🌍Package Contents🌍: 24 Pack 2800mAh 1.2V NiMh AA rechargeable batteries

🌍Long-lasting power🌍: Each 2800mAh battery can be charged up to 1200 times, saving you money and reducing waste.

🌍Convenience and value🌍: The 24-pack provides plenty of batteries for all your devices, and the pre-charged batteries are ready to use right out of the box.

【Long-Lasting】LR41 Battery, operating in the 1.5v voltage, the inner high energy density enables it to achieve long-last power supply

【Packaging upgrade】: In order to facilitate customer storage, Bonai has designed a brand-new packaging. just need gentlely broken the battery into strips, which is more convenient for your storage and does not take up space.

【Leak-proof and mercury-free】The lr41 button batteries adopt advanced sealing technology, which can effectively prevent leakage and maintain excellent performance under different temperature conditions. Battery lr41 always adhere to the zero mercury environmental protection design

【Main Parameter】CR2032 batteries are 20mm wide and 3.2mm thick, operating in the stable 3v voltage, which could deliver current to devices fluently.

【Leak-proof & No Hg】The cr2032 3v lithium battery can effectively prevent leakage due to advanced sealing technology. Always adhering to the Zero mercury harmless design

【Widely Use】The cr2032 3v battery can power various devices consistently well, you can open the garage door easily with it, and wouldn't get a low battery warning from time to time. Good to go for the garage door remotes, car key fob, blood glucose meter, thermometer, electronic weight scale, digital food scale, bathroom scale, calculator, activity tracker, pedometer

【Basic Information】lr44 battery packaging upgrade, more convenient storage and use. Chemistry: Alkaline(non-rechargeable). Voltage:1.5v. Shelf Life: 3 years.

【Leak-proof and mercury-free】The lr44 button battery used unique sealing technology, which can prevent leakage and maintain excellent performance in different temperatures. Zero mercury design is harmless to humans and the environment

【Widely Use】The inner high energy density enables the LR44 battery to power up various devices consistently well, batteries lr44 are ideal for small Electronics，LED flashlight, calculator, calipers, remote control, laser pointer, toys, children's book, light string, ornaments

Package Contents : 4 Pack 2800mAh 1.2V NiMh AA rechargeable batteries

Recycle Times: Can be charged up to 1200 times, save money from buying huge of one-time used batteries

Low Self-discharge: It will still maintain 80% of initial capacity after 3 years of non-use, it’s highly recommended to be fully charged every 3 months

【Safe & Leakproof】 The zero-mercury lithium coin cell batteries, making of premium materials provides corrosion protection, and its could effectively avoid leakage with advanced sealing technology.

【Long-Lasting】The inner high-energy density makes 3V lithium batteries achieving long-lasting power for devices. The Shelf life of cr2025 is up to 5 years.

【Reliable Performance】CR2025 3v battery always has stable voltage to support your devices, withstand wide temperature range at -4~140ºF.

Package: 8 pack 10,000mAh high capacity D cell rechargeable batteries

Durability: Adding mix-protection additive to the negative pole of batteries, and no memory effect, can be charged up to 1200 times

Low self-discharge: High capacity, Low self-discharge batteries will remain 85% juice when you leaving it for no use 1 year

【Safe & Leakproof】 The zero-mercury lithium coin cell batteries, making of premium materials provides corrosion protection, and its could effectively avoid leakage with advanced sealing technology.

【Long-Lasting】The inner high-energy density makes 3V lithium batteries achieving long-lasting power for devices. The Shelf life of cr2025 is up to 5 years.

【Reliable Performance】CR2025 3v battery always has stable voltage to support your devices, withstand wide temperature range at -4~140ºF.

600mAh Li-ion (4 Pack)Rchargeable 9v batteries with Charger(9v,2Bay).

9V Battery Charger: Suitable for any brand of 9V Rechargeable batteries, can charge 1 or 2 batteries at a time.

9 Volt Rechargeable battery: No memory effect & Low-self discharge,holding capacity effectively,not have to change every day.

600mAh Li-ion rechargeable 9V batteries(Pack of 4). Note: 9V lithium-ion batteries on market are often called a "9-volt battery", which is a type name. Actually, its nominal voltage is 7.4v. Because it uses two cells connected in series (3.7–4.2 V nominal each). When fully charged, the voltage is about 8.4V.

No memory effect & Low-self discharge,holding capacity effectively,not have to change every day.

Bonai 9V Rechargeable Batteries with great quality,1200 cycle ,Even if it is charged every day,it can be used for more than 3 years.

Package: 4 pack 5,000mAh high capacity C cell rechargeable batteries

Can be charged up to 1200 times, perfectly replace standard C size batteries and NiCd rechargeable batteries

Maintains 80% of original charge after being stored for 3 years of non-use, it’s highly recommended to be fully charged every 3 months

Package: 4 pack 10,000mAh high capacity D cell rechargeable batteries

Batteries come pre-charged and can be recharged up to 1200 times

Perfectly replace standard C size batteries and NiCd rechargeable batteries

【LONG-LASTING POWER】With a high capacity of 1200mAh, these newly upgraded BONAI lithium batteries aaa last 10x longer than aaa alkaline batteries, making them the perfect choice for high-drain devices.

【EXTREMELY SAFE】With built-in leakage protection and anti-explosion technology, these NON-RECHARGEABLE batteries aaa are extremely safe to use, giving you peace of mind and worry-free convenience.

【HIGH ENERGY DENSITY & STABLE OUTPUT】Featuring a stable output and high energy density, these batteries aaa size provide powerful and reliable performance for all your household needs.

♻️1.5V Constant Voltage Output♻️: AAA lithium batteries are continuously stable and output 1.5V voltage for the whole process until the charge completely depletes.

♻️Versatile Compatibility♻️: Rechargeable AA lithium batteries are Compatible with any AA battery-powered device, more suitable for household electrical devices with high power requirements. With a low self-discharge rate, they maintain 80% capacity after 36 months of non-use. Use them for your Blink cameras, Wireless microphones, Auto air fresheners, and more.

♻️Fast Charging♻️: The battery charger input voltage is DC 5V/2A, and the output is DC 5V/500mA, which can support a mixed charge of both aa and aaa 1.5v aa/aaa lithium. It With battery detection function, if it is not a rechargeable lithium battery when charging, it will flash red light, so you can rest assured.

Package Contents: 16 Pack AAA rechargeable batteries 1100mAh and 8 Pack rechargeable AA batteries1100mAh

Low Self-discharge: With low self-discharge technology, the AA and AAA battery will still maintain 80% of capacity after 3 years of non-use. Bonai NiMH rechargeable batteries are made of environmentally friendly materials, do not contain Hg / Cd / Pb, free of toxic heavy metals. (Can be used in -20 ℃ to 60 ℃)

Recycle Times: Triple A rechargeable batteries can be charged up to 1200 times, and the double A rechargeable batteries are 2000 times. Saving money from buying a huge number of one-time used alkaline batteries

Ni-MH D rechargeable cells: 8 Counts10,000mAh high capacity 1.2V Ni-MH D rechargeable batteries. One battery charged at one time is workable.

Multi-Function: Independent charging slot. It can random charge 1 to 4 of Counts AA/AAA/C/D batteries or 1-2 Counts of 9V Ni-MH/Ni-CD rechargeable batteries at the same time.

Personality LCD Screen display to show: charge, discharge, error detect. Press the blue discharge button to discharge mode, automatically turn to charge mode when fully discharged. The LED indicators are for li-ion 9V Battery only.

【Package Contents】24 Pack 1100mAh NiMh 1.2V AAA rechargeable batteries and 16 Pack 2800mAh NiMh 1.2V AA rechargeable batteries

【Reuse Times】The AA and AAA rechargeable battery can be charged up to 1200 times, saving money from buying a huge number of one-time used batteries. Bonai Ni-MH battery does not contain Hg / Cd / Pb, it’s safe for people and the environment

【Low Self-discharge】Rechargeable AA and AAA battery do well after long periods of non-use. They will still maintain 80% of initial capacity after 3 years of non-use.

🌍Long-lasting power🌍: Each 2800mAh battery can be charged up to 1200 times, saving you money and reducing waste.

🌍Convenience and value🌍: The 24-pack provides plenty of batteries for all your devices, and the pre-charged batteries are ready to use right out of the box.

🌍Reliable performance🌍: With low self-discharge, these batteries maintain 80% of their initial capacity even after 3 years of non-use. We recommend fully charging them every 3 months for best results.

High Capacity & Long Lasting Time: Bonai 1100/600mAh High Capacity AA Rechargeable Batteries can give you more time to run with solar garden light and no more changing your solar light battery every 1-2 years.

Multiple Uses Perfectly: Perfect fit for solar powered garden lights, landscaping lights, lawn lights, etc and replace all 1.5v alkaline disposable batteries that power your TV remotes, wireless mouse and keyboards and so on.

Good Performance: Use special materials and formula withstands freezing cold and blistering hot outdoor temperatures (it can be used in -20 ℃ to 60 ℃). They can be charged from the sun even in the snow.

🌍Package Contents🌍: 24 Pack 2800mAh 1.2V NiMh AA rechargeable batteries + 16 Pack 1100mAh 1.2V NiMh AAA rechargeable batteries

🌍Reliable performance🌍: With low self-discharge, these batteries maintain 80% of their initial capacity even after 3 years of non-use. We recommend fully charging them every 3 months for best results.

Recycle Times: Can be charged up to 1200 times. Saving money from not buying a huge number of one-time used batteries or alkaline batteries.

【Safety】 ：Multiple safety protections, over-current, over-charge, short-circuit and over-heat protection, etc., and has the function of automatic battery inspection, which can detect bad batteries

【Intelligent control】： Latest battery detection technology, automatically turn to trickle charge when batteries are nearly full charged.

【Fast & convenient charging】： Max Input current up to 5.0V / 2A. Using Micro USB and Type C port , A variety of port options, charging is more convenient.