|The Big Brother Was Used For testing|
|12 Volt And 120 Volt Chargers|
Since these batteries can be charged with 5 Volts, they are a natural to use a USB cable as a power source. The higher the amperage the better, as Li-ION can charge at fast rates with more amps going in. (**Within reason!) The typical trickle USB charger at .500mA will eventually charge one, but slowly. 1 Amp is better. The chargers that come with the batteries were, essentially, all the same. They list at around 750mA charging and for the 12 Volt DC charger (cigarette lighter plug) only around 500mA. They will charge...just slowly. Figure a bit less than overnight for a 50% used battery. You can always buy a much better, higher quality charger. In fact, I've ordered several and will be testing them over the next few weeks.
**WARNING!** I know there is a real danger using sub-standard lithium-ion batteries. There is a real worry about "thermal runaway" -- this is when the battery overheats when charging or discharging and it causes a cascade effect, causing the battery to melt down or even explode. Monitor these batteries carefully until you are sure they are working as advertised. It always pays to be careful when dealing with new technology.
So, what's the verdict? You get what you pay for. Sort of. The cheapest ones and the more expensive ones are all the same price...within a few dollars. When you get to the name brands (Panasonic) they are much more expensive, but actually match their rated specifications. The ratio is way off -- you can buy 5 knockoffs for each "real" one. If you find a good supplier, you can get decent knockoffs and have lots on hand. As always, YMMV!
Be Seeing You...Down The Road,
Rich "The Wanderman"