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Energizer Power Plus Rechargeable AA Batteries (8 Pack), Double A Batteries

Energizer Power Plus Rechargeable AA Batteries (8 Pack), Double A Batteries

Q: Why are these batteries rated at 1.2v instead of 1.5v like all disposable batteries are.Also the chargers will only charge them to about 1.4v

Chemistry. Alkaline and lithium disposable batteries are 1.5V because that is the electric pressure of the reaction. NiMH rechargeables are always 1.2V and NiZn rechargeables are always 1.6V for the same reason. What matters more is the physics! Battery capacity SHOULD be listed in joules or watt-hours, but they show it in mAh because that makes rechargeables look better. 1.2V * 2,300 mAh = 2,760 mWh — and 1.5V * 1,840 mAh = 2,760 mWh. Those are the same capacity. A 2,300 mAh rechargeable has the same capacity as an 1,840 mAh disposable battery. Both batteries would theoretically power a 100W light bulb for 1 min. 39.36 sec — because 2.760 Wh / 100W = 0.0276 hours = 1 min. 39.36 sec. They use 2,300 mAh for marketing because that makes the rechargeables look 25% better than they actually are.

Q: is the more Amh on a battery will be beter

Higher mAh is beneficial with devices that are high-drain. For example, a digital camera which will exhaust alkaline batteries in a period of hours or days, or a high-output flashlight. However, the highest mAh batteries have a higher rate of self-discharge and therefore do NOT give better performance in low-drain devices. For example, eneloop's Pro 2550 mAh performance battery has a self-discharge rate that is about 5 TIMES that of the regular 2000 mAh eneloop 2100. For regular devices, the standard battery gives better performance. For high drain devices, the high performance battery gives better performance. As neither do well with the reverse role, having the battery paired to the specific application is generally the best way to go.

Q: Do these come charged or do you have to charge them before use?

It is a good idea to charge them before use but yes, they do come charged. All eight of mine were charged at 1.29 volts. As a matter of fact, I don't think I have ever bought a rechargeable battery that has not been charged. Even the cheap batteries from China come charged.

Q: Can these be left on the charger 24/7 or should I remove them after a full charge?

I went on vacation for six weeks and forgot to take my energizer AA rechargeable batteries off the charger before I left. When I returned, there were no fires. Batteries were cool to the touch. And yes, they still work. Was their lifespan shortened? Not noticeably (I mainly use them for headphones, their charge measured 1.4v when I first removed them from the charger and 1.3v the following day) I usually get about five or six weeks of use out of a single battery in my headphones. I'm on week four right now and I don't notice any sign of low power. I'm too lazy to actually test the voltage and see if it's below 1.3v, but the headphones are sounding great which is test enough for me. I'm using a $10 Duracell charger I bought around 2012, so nothing fancy. Should you make a habit of leaving them on the charger? Absolutely not. Is it okay if you do? Well, these four year old batteries survived six weeks of constant charging without any 'serious' damage.

4.7/5

产品编号: 262369156

安全交易

细节

Number of batteries
8 AA batteries
Brand
Energizer
Battery cell composition
NiMH
Battery capacity
2300
Recommended uses for product
Camera

⚡Hundreds of recharge cycles

🔋Up to 12-year lifespan

♻️22% recycled materials

经常一起购买

Energizer Power Plus Rechargeable AA Batteries (8 Pack), Double A Batteries

Energizer Recharge Pro Rechargeable AAA and AA Battery Charger With 4 NiMh Rechargeable AA Batteries, Provides a Full Charge in 3 Hours

Energizer Rechargeable AAA Batteries, Recharge Universal Triple A Battery Pre-Charged, 8 Count

描述

🔋 Recharge your life, save the planet, and never miss a moment!

ECO FRIENDLY ENERGY - Feel good charging with batteries made from 22% recycled materials, reducing your carbon footprint.
PRE CHARGED READY - Out of the box power that holds charge up to 12 months in storage—always ready when you are.
LEAK PROOF CONFIDENCE - Designed to prevent leaks, protecting your valuable devices and ensuring safety.
POWER THAT LASTS A DECADE - Experience up to 12 years of reliable energy without constant replacements.
VERSATILE DEVICE COMPATIBILITY - Perfect for cameras, game systems, toys, and more—power your lifestyle sustainably.

Energizer Power Plus Rechargeable AA Batteries (8 Pack) deliver up to 12 years of battery life with hundreds of recharge cycles. Made with 22% recycled materials and engineered to prevent leaks, these pre-charged batteries hold power for up to 12 months in storage. Ideal for cameras, gaming devices, and everyday electronics, they combine sustainability with dependable performance.

规格

Product Name	Rechargeables
Units	8 count
Brand	Energizer

有问题吗？看看别人问了什么

Why are these batteries rated at 1.2v instead of 1.5v like all disposable batteries are.Also the chargers will only charge them to about 1.4v

is the more Amh on a battery will be beter

Do these come charged or do you have to charge them before use?

Can these be left on the charger 24/7 or should I remove them after a full charge?

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