Re: (ET) Kill the battery (Fall, leaf vacuum, etc)

["David Roden" <etpost drmm net>]

When you do a reconditioning charge on your 90 NiCd cells (they're not 
batteries), it's not necessary or desirable to discharge them that close 
to 
flat. 

Saft's reconditiong charge instructions: 

1. Discharge at C5/5, that is at 1/5 of the 5-hour amp hour rate expressed 
in amperes, until all the cells are below 1.0 volts.*  

IIRC your cells are 34 amp hours.  That's probably the C20 capacity so 
let's guess that C5 will be 30 amp hours.  So discharge at 6 amps.

2. Charge at C5/10 for 14 hours or at C5/5 for 7 hours.  So for you, 3 
amps 
for 14 hours or 6 amps for 7 hours.

3. Water.  

4. Done.

*If you insist on going below 1.0 volts per cell, discharge the INDIVIDUAL 
cells, not the battery.  That way you don't risk reversing the weak cells.


David Roden - Akron, Ohio, USA

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