I'm generally OK with electronical things, but hardly an expert on rechargables, from reading the posts here. So, thanks in advance; here's the question:
Like a lot of folks, i have a pile of those solar yard lights with a couple of rechargable AA nicads, which have lost their capacity to store a charge. (trying to recharge the cells with a nicad charger fails, substituting alkaline AA cells in the lights makes them work) It's easier to find NiMH these days so I tried a couple of lights with newly purchased NiMH cells; these babies were rated at 2200 mAH compared to 300 for the original NiCads. I wasn't expecting any better performance, mind you, assuming that the solar cell output is the limiting factor; but I'm not entirely sure that I'm not getting less output from them now. It's midsummer here, max daylight, and these NiMH are only charging up enough to run the lights for a couple of hours every night. I'm pretty sure I used to do better than that with the original Nicads. So here's the part where my knowledge of rechargables runs out; is it possible that the NIMH cells actually charge less than NiCads on the little cheapo solar charger in the light? Or is it just my own faulty memory?