Is there any major difference between NiMH chargers besides amount of batteries and chargetime they can handle ..? Any particular good/bad brands of batteries ..?
I'm wonder if low-end types miss temperature measurement and have a rough charge cycle (timer based?).. etc..
Yes. Essentially, the cheaper, the less features. On the cheapest, expect to be able to only charge banks of cells - say 2 or 4, and for them to be on a simple timer set for the batteries included 'free'. They will not often cause other cells to explode.
Slightly more expensive, and you get delta-vee based shutoff, more expensive still and you'll get delta-vee and thermal. And for extra money, you can get the last two with actual charge state displays, rather than just LEDs. For even more money, you can get ones that can measure and report capacity too.
batteries
Monitoring the temperature of a NimH cell is a good idea during charge and high current discharge to avoid damage to the cells.
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batteries
Oh, I'm not saying it's not. Just what current chargers do. Per-pack, or ideally per cell temp measurement is the gold standard.
Any tip on what to look for physicaly to find the good ones? Guess delta-V and Temperature monitoring is what to look for. Other than that there's no major discrepancy ?
Build quality, connectors that work reliably, ... Generally, any mention of charge termination other than timer means it's delta0-v. And temperature monitoring tends to be mentioned seperately.
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