amdx wrote:

Just to be different, Could the diodes and resistors be used to trickle
charge after the batteries are fully charged.
The charger output switches from the ( - ) neg of the battery to the
resistor diode string connected to ( - ) neg,
and allows for long times on the charger without cooking the batteries.
Mike

Yet one more "different"... how about if the voltage drop
across the resistor is compared to the breakdown voltage
of the diode to determine the state of charge?

Ken