BR>Ok, but my question still stands  what voltage to use when
doing a long-t
BR>maintenance float on NiMH batteries ???

BR>FYI, my research has discovered that Lead Acid cells need 1.085x and
BR>rechargable alkaline/lithium use 1.02x ... but NiMH?

 According to Panasonic, A Large manfacturer of Top Quanlity NiMH cells
 "Trickle Charging" for maintenance of NiMH cells is NOT recomended
 They should be placed on a Intermmittent Timer Automatic Charging unit
 Their end of charge point requires Both voltage and Cell temperature
 measurments. The cells are charged and them allowed to sit until a
 predetermined voltage droop and then the charging cycle is started
 again.

 I clipped the following form a paper on NiMH Battery Care.
 ***
"In order to achieve maximum efficiency when charging a battery, it is
 necessary to implement charging techniques geared specifically for a
 battery cell chemistry. For example, negative delta V or dT/dt
 termination criteria is used for NiMH cells"

CHARGING BASICS:
 A NiMH cell has a nominal voltage of 1.2V. Therefore, as an example
 stacking three NiMH cells together results in a battery pack with a
 nominal voltage of 3.6V and a maximum voltage of 4.5V. Typically, a
 NiMH cell is charged with a constant current until a terminating
 condition is encountered.The most common way to determine when a NiMH
 cell has become fully charged is to either observe a drop in the
 voltage or a rise in the temperature. As the cell becomes fully
 charged, the voltage drops slightly. At the same time, the temperature
 rises rapidly as less of the charge source energy goes intoactually
 charging the cell and more of the energy turns into heat"
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 þ SLMR 2.1a þ This note from El Cajon California USA