Rechargeable Battery Service  

PRIMECELL Div. ~ CUNARD ASSOCIATES Inc. ~ Proud to be American

 

  PRIMECELL NIMH CONVERSIONS can be used with the ORIGINAL NICD CHARGER

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CHARGING NIMH BATTERIES

Original equipment, and clone replacement NIMH batteries,

must be charged with a "smart charger" designed for NiMh batteries.


   PRIMECELL NIMH CONVERSIONS can be used with the ORIGINAL NICD CHARGER


    Many of our rebuild options include conversion to NiMh cells for huge increases to capacity - When required, our conversion process includes installation of protection circuits to allow charging without requiring expensive smart chargers. 

Items that are marked "Use original charger"  are NiMh rebuilds which can be charged with the NiCd chargers originally supplied with the product.  

Look for items that are marked  "Use original charger"  

no special charger is required.



Notes about using our High capacity NiCd and  NiMh rebuilds


The battery is not charged when you receive it


The cells may be much larger in capacity that those originally used.
If the battery has been converted from NiCd to NiMh
it is common to see 2 to 3 times as much operating time.


If using an over night (16 Hr ) charger - Charge it at least 24 hours for a maximum charge.  Remove it after charging.


If using a smart (quick) charger allow it to finish charging.  The first time the battery is quick charged - it may not be full.
  This is normal with NiMh cells - when they are new - they must be activated by 2 to 3 charge cycles ( charge and discharge ) After activation, they will reach maximum capacity with a normal quick charge.


Over charging ( until hot ) is prevented by current control or the addition of thermal switching which we may have installed with many NiCd to NiMh conversions. You do not have to worry about leaving the battery on the charger - however ... you must understand that
excessive charging ( without discharging ) will result in shorter product life.


If the battery feels warm to the touch, it is very likely that the thermal switch has already activated to prevent over heating.  If it has - the battery may appear to be defective when over heated. If using a fast smart charger, the battery will be disconnected by a thermal switch. It will not reconnect, until the battery reaches a safe temperature.  Allow an hour for the cells to cool. Once the thermal protection resets, the battery will work normally.  It is fully charged and ready for use.


Do not leave it on the charger - unless you are going to use it every day.


Once removed from the charger;
The battery will self discharge as much as 1% per day.
After 30 days it will have 70 % charge left - a full charge can be restored in 8 hours of trickle charge.
After 90 days it will have only 10 % charge left - a 24 hour charge must be performed before use.

 
When use of the appliance reveals that the battery is low -  Do not continue to further discharge it.  If the unit is left on after the battery is low - this can cause deep discharge, and may result in permanent damage to the cells.


For other user information follow the original owners manual - and substitute 24 hours for the 14 to 16 hour charge time.


Thanks, 
TechNotes@primecell.com

 

 

 

 

PRIMECELL DIVISION,  CUNARD ASSOCIATES INC.,
9343 US RT 220  BEDFORD, PA 15522

Copyright 2000  Primecell . All rights reserved.
Revised:June 05, 2006