7.2 Volt Field Charger (pdf)
The unit is novel as it’s display graph shows you the time the battery has been charging in 2 minute intervals up to 16 minutes when finished. The “power” led indicates source voltage as it dims, and goes out at 11 vdc, this is needed because the unit draws 20 amps fully charging 4 batteries as you will need to run your engine or you will walk home!!
Read more Source:
http://www.uoguelph.ca/~antoon/circ/7.2V-Charger.pdf
Related Posts :
This lead-acid battery charger/conditioner is suitable for charging and maintaining both open and sealed type 6 or 12V lead-acid batteries. Charging current: 0.3 or 1A. The battery can be hook ...
This circuit be lead acid battery charger again interesting circuit, Because it can charger get both of 12V sizes and 6V. By change with switch only and this circuit charging with curr ...
There are many circuits available for charging batteries, but many are for NiCd or NiMH batteries. They will not work for lead/acide batteries, so don't use these!!! The best way to charge a batte ...
To use portable devices such as digital camera, wireless headphone, pocket radio, etc, which they operates with two "AAA" size batteries, using rechargeable Ni-Cd batteries is a conscionable way t ...
This battery charger charges a NIMH 5-pack battery used in the BiPed robot in less than 1 hour, and charges the 10-pack NiCd used in the Snuf robot in about 30 minutes. To prevent overheatin ...
or 
