Any use for a Rayovac RENEWAL charger for rechargable Alkaline cells?

[lumen aeternum]

I have a couple taking up space. Are they of any use with current battery types?

 

[Dave_H]

I am using a Renewal PS1 currently. Someone discarded some rechargeable alkaline AAs which were still good. They do a good job, also work for NiCd and NiMH. Not fast charging and is mostly "dumb", which seems to work with older NiMH which are still usable, but many fast/smart chargers refuse to charge. I still find it useful.

Rechargeable alkalines popped up in the 1990's but have mostly faded away. Their limited charge life and declining capacity over it were major downsides. They could leak, although seemed less egregious than regular alkalines. NiMH basically took over.

Dave

 

[Dave_H]

Some older AA NiMH which don't want to charge on two other chargers, are being charged by the Renewal. It is slower, no big deal. For that alone it is worth holding on to. I don't expect to get
too many more cells though.

The six rechargeable AA alkalines I recovered have been used in an outdoor temperature sensor, in pairs. Their capacity is going down, still usable after over a month but not much longer. This sensor seems hard on alkalines, holding up a few days or week maximum.


Dave

 

[MidnightDistortions]

I am using a Renewal PS1 currently. Someone discarded some rechargeable alkaline AAs which were still good. They do a good job, also work for NiCd and NiMH. Not fast charging and is mostly "dumb", which seems to work with older NiMH which are still usable, but many fast/smart chargers refuse to charge. I still find it useful.

Rechargeable alkalines popped up in the 1990's but have mostly faded away. Their limited charge life and declining capacity over it were major downsides. They could leak, although seemed less egregious than regular alkalines. NiMH basically took over.

Dave

Sorry for reviving this old thread but I couldn't use the renewal charger I have due to the way the positive side is designed. I am using a paperclip to be able to connect the positive terminal (not an ideal method) I don't know if it was designed to charge NiMhs as you say. I have another Ps1 model that is black which does work for NiMh cells.

Edit: I had some tin from some fish I had a while ago, cut the lid in strips so I could put it on the positive side on the charger. Seems to work but won't charge dead/null cells.