Re: NiMH battery compatibility with NiCd chargers

From: Jeff (jeff_at_local.host)
Date: 06/29/04 

Date: Tue, 29 Jun 2004 08:49:17 +0100

> Hi.. I don't have any experience with NiMH batteries, and I never much cared
> for the problems associated with NiCd cells, so I'd like to know if using
> NiMH will be less problematic than NiCd.
>
> Will NiMH cells charge and last perfectly well in NiCd chargers,

Slow chargers YES, (just extend the charge time to cope with the,
probably, larger capacity of the NiMH cell), fast 'intelligent' chargers
NO.

NiMH cell have different end point voltage characteristics, so
'intelligent'
chargers do not detect full charge correctly, with the possibility of
over-charging.

NiMH cell do not suffer as badly as NiCs's with memory effect and are
generally
higher capacity, the only downside is that their self-discharge rate is
quite high. This means that they must be recharge frequently, and are
not
very good in equipment that is not used very often.

Regards
Jeff

Relevant Pages

  • Re: NiMH battery compatibility with NiCd chargers
    ... I found this lengthy article about analyzing batteries and includes ... I don't have any experience with NiMH batteries, ... >>for the problems associated with NiCd cells, so I'd like to know if using ... >>NiMH chargers be required for best results? ...
    (sci.electronics.repair)
  • Re: NiMH battery compatibility with NiCd chargers
    ... >NiMH will be less problematic than NiCd. ... >NiMH chargers be required for best results? ... This must be the day for batteries. ...
    (sci.electronics.repair)
  • Re: charging NiMH batteries in a NiCd charger?
    ... Will the NiCd ... >Most NiCd chargers are designed for NiMH cells as well. ... A large proprtion of standalone chargers are, ...
    (sci.electronics.design)
  • Re: NiMH battery compatibility with NiCd chargers
    ... >for the problems associated with NiCd cells, so I'd like to know if using ... >NiMH will be less problematic than NiCd. ... >NiMH chargers be required for best results? ...
    (sci.electronics.repair)
  • Re: Quick charger vs Slow: Which last longer NiMH batteries?
    ... The great majority of consumer chargers aren't fast enough to do any ... substantial harm to the batteries. ... NiCd charger is used on NiMH batteries, ... NiCd or NiMH cells were used. ...
    (rec.photo.digital)