Common myths about rechargeable batteries
Common myths about rechargeable batteries
Last Edited: 19/Feb/2016

Rechargeable batteries may have been around for a long time, but they’ve also developed an extensive set of myths which go along with them. Let’s have a look at some of the most well-known battery myths currently doing the rounds.

1) Rechargeable batteries can “overcharge” your batteries

Highly unlikely. Battery chargers - and that includes not just your standard AA and AAA rechargeable batteries, but your phone, laptop and other rechargeable devices - are pretty smart these days. Once they sense that the battery has hit 100% charge, they turn themselves off for long enough to allow power levels to drop down to about 95%, when they kick back in again and bring charge back up to 100%.

2) Always let batteries drain down to flat

Even when a battery claims to be flat, there’s usually about 10% of power lurking in there. This allows it just enough to tell you that it’s flat. On devices with screens or power indicator lights, it’s usually enough to flash up a warning message to tell you that you need to charge it. In fact, allowing a battery to completely die is actually bad for it, and stops it being as effective.

3) Charge batteries fully before their first use

Remember getting your first mobile phone, and having to leave it to charge overnight to get the battery fully charged? This was to “calibrate” the battery, to help your device learn how its battery partner behaves. Thankfully, those days are long gone because batteries these days self calibrate. Sure, you can still charge it fully first, but you won’t damage it if you don’t.

4) Store your batteries in the fridge

Absolutely not! Your batteries are full of chemicals, and the reactions between these chemicals are what provide the power to your devices. Putting chemicals into a very cold environment can be dangerous. Research by battery manufacturer Energizer shows that the best place for your batteries is somewhere they can experience room temperature, where they’ll last you for about 10 to 15 years.

Now you know how to look after your batteries, you can stock up on any of the excellent batteries sold by House of Batteries, and be safe in the knowledge that you’re offering them a good home.