Top critical review
5 people found this helpful
It works but very slow
on October 29, 2013
It outputs only 600 mA which is very low in relation to the larger size batteries. You end up with significant charging times. The largest batteries have 7 Ah which means it needs 12 hours to charge an empty battery. The other thing to keep in mind is that these chargers rely on the internal protection circuit of the battery. They don't actively monitor voltage nor temperature. The only reason they can get away with it is by keeping the charging current so low. Faster charging rates require smarter electronics that monitor the battery properly. Nothing wrong with have a bunch of these as cheap alternatives, but just know that there are differences between good (fast) chargers and that there is a reason why they are more expensive.
The option to charge from a car cigarette plug is a nice feature until you realize you won't be leaving your car running for 8-10 hours just to charge a battery and even during a 2 hour drive you won't be able to get much charge into your battery with this.
One little tip to extend the life of your batteries. Lithium batteries age faster the higher they are charged. If you always charge a Lithium battery to 100% it will age faster. If you only charge it to say 80% it will age less and last many many years. Same is true for storage. Don't charge them when you know you won't be using them for a while. Keep them at 30-40% and charge them the day before you need them.