I need to build a circuit to allow me to limit charge current to a SLA or Gel battery connected directly to a vehicle DC system when the car is running. I want to be able to limit the current to no more than about 8 amperes so that if I run my SLA/Gel down, the alternator won't try to charge it back up at 30 amps (or more).
Obviously I want to keep the SLA/Gel charged up but not destroy it with too much current. The battery I have now is rated at 7.5A (8-hour rate), but would like to be able to change that based on other batteries.
Anyone know of a nifty design that is relatively immune to temperature changes, and hopefully not a source of RF noise? This will be used to run a Ham rig, both when the vehicle is moving and also when it is stationary.
Thanks a lot!
Jim in Oregon
Obviously I want to keep the SLA/Gel charged up but not destroy it with too much current. The battery I have now is rated at 7.5A (8-hour rate), but would like to be able to change that based on other batteries.
Anyone know of a nifty design that is relatively immune to temperature changes, and hopefully not a source of RF noise? This will be used to run a Ham rig, both when the vehicle is moving and also when it is stationary.
Thanks a lot!
Jim in Oregon