Quote:
Originally Posted by apowers
I made a Bonn charger. It does a taper charge, amps go down as volts go up.
It did not make batteries happy. I changed the inductor on it some and added
the Open ReVolt control board and another inductor and capacitor to boost the voltage for a 144 volt pack. The control board is only switching the mosfet, but it could do more. I set the timer for 2 hours and adjust the potentiometer to 11.5 amps for my 115 ah batteries.When it gets to 172.8 volts I turn the potentiometer down to 4amps. Reset the timer for 2 hours
and leave it alone. The time on the 11.5 amp bulk charge varies, depending on the DOD. My batteries are very happy now. I don't have much money in it.
alvin
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Hi Al,
Thanks for the link. Unfortunately I don't seem to be able to work out the calculations correctly. Must be doing something wrong there. Could you let me have the values you used for your boost converter because it seems to be exactly the ring values for mine?
Have a Great Christmas too.
Doug