Good for short use times
May 14, 2011
I like to use rechargeable AAA or AA but 2 of my blinkie lights on my bicycle use 2032s. I do not like adding to problem of disposable batteries so I use rechargeable whenever I can.
I just received this charger and so far, so good. I have charged 3 pairs of batteries and each pair was fully charged within 40 minutes. The LIR2032s that I purchased came in at 3.6 V right out of the package. When the charging was finished, they measured at 4.0 - 4.1 V.
There are 3 lights - 2 green and 1 red - on this charger. When you first plug it in with discharged batteries in it, the center red light starts blinking and the right green light stays steady. When charging is done, the center red light goes out and the left green light lights up. I noted that as the charging was nearing the end, the red light got dimmer and the green light on the left got brighter which signaled that the batteries were nearly done.
I did put 2 batteries in the unit with different charge levels. One was 1.5 V and one was 3.0 V but, within 40 minutes, this ’smart’ charger shut itself off (as it should) and both batteries were at 4.0 V. I am not sure how it managed to keep everything even and not ’burn up’ one of the batteries.....
I am using the LIR 2032s in blinikie lights for my bike. Each light has 2 LEDs. If left on constant light, they batteries last 25 minutes of blinding bright time with another ~30 minutes of light that is bright enough to be useful. So.... 1 - 1.25 hours of usefulness on one charge.
When on ’blink’ mode, they are pretty blinding for 1.5 hours and are still very visible at 2 hours. Re-charging is suggested after 2 - 2.5 hours.