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public
join:2002-01-19
Santa Clara, CA
 ·DSL EXTREME
| reply to kf6ytc
Re: Battery Chargers
said by kf6ytc  :High end batteries will have a charge voltage, ie. 12.9 volts....... If you get a good power supply, $50 for a switching one, about 10amps, just adjust the power supply to the charge voltage (12.9) and the powersupply will charge the battery, but once the voltage of the battery is also 12.9 the battery will draw virtually no current from the supply, so you can leave the power supply on the batteries without having to turn it off, or overcharging. The float voltage depends on the battery construction AND on temperature. A long life charger must be temperature compensated.
A pulse charging method is believed to reduce sulfation and extend battery life. Steady charging is simple, but does not give the longest battery life. | |
kf6ytc
join:2002-03-26
Turlock, CA
| reply to Equis
I use old commercial ups batteries that are taken out of use due to a maintaince agreement, These are deka 110ah sealed lead acid batteries.... they have a 7 year life per deka, and i get them after 1 year....
High end batteries will have a charge voltage, ie. 12.9 volts....... If you get a good power supply, $50 for a switching one, about 10amps, just adjust the power supply to the charge voltage (12.9) and the powersupply will charge the battery, but once the voltage of the battery is also 12.9 the battery will draw virtually no current from the supply, so you can leave the power supply on the batteries without having to turn it off, or overcharging.
I know some places sell charge controllers, i would be interested in others feedback on them........
TJ | |
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