Tag Archives: sanyo-eneloop

Apple Rechargeable Batteries

Last fall, I published a post which discussed the Apple rechargeable batteries. They aren’t manufactured by Apple, of course. These rebranded goodies are actually Sanyo Eneloops. They cost more when they come in the Apple packaging, definitely. The question of the day is whether or not they work better than other offerings on the market.

By all accounts, these batteries do work better than most of the others you could buy. They last longer – and cost less – than the Energizer or Duracell equivalents. Using any rechargeable batteries is a much better idea than using disposables. You’re saving money in the long run, absolutely. You’re also helping the environment by not having these little suckers fill up the landfill. They don’t exactly break down into an organic compound when they sit for fifty years.

Lithium-ion polymer batteries pack in a higher power density than nickel-based batteries. This gives you a longer battery life in a lighter package, as lithium is the lightest metal. You can also recharge a lithium-ion polymer battery whenever convenient, without the full charge or discharge cycle necessary to keep nickel-based batteries at peak performance.

The length of time that any battery will power your device depends on you more so than the battery brand. Watching DVDs will eat up your go-go juice much faster than using a word processing program. Similarly, gaming for hours on end sucks down battery power ten million times (slight exaggeration there) faster than watching YouTube videos.

Did you know that your environment can play a role in how long your batteries live? Extreme temperatures will definitely affect performance. In temps higher than about 95F (35C), your battery capacity can become permanently damaged. It won’t then power your device for very long on a “full” charge. You can actually damage it even more if you charge the batteries in these temperatures. Simply storing a battery somewhere really hot can also irreversibly hurt it.

Likewise, using your device in freezing temps will decrease battery life. Fortunately, this is only a temporary condition – quite the opposite effect of hot temps. Once the batteries warm back up, they will return to their regular capacity.

What type of batteries do you use in your devices? How well do they work?