Originally Posted by Razmo
I'd like to be able to charge large lipo packs at the field that allow for high rate C charge, rather quickly.
Now, this can be accomplished at home rather easily using a high watt power supply. My question, does anyone know (for example) whether I can accomplish a powering my charger at a consistent 1000 watts using a 12v (or two wired in series) car type battery(s)?
I came across a 12v deep cycle battery at Batteries Plus rated at 80amp hours, however am curious whether this equates to a constient 960 watts? (12v x 80a = 960w)..
What charger are you using to get a 1000 watts? From what I'm aware, only the Cellpro powerlab 8 has a 1000 watt charger. Their high power Cellpro 8 requires two 12 volt Deep cycle batteries in series for 24 volts to get that 1000 watts.
I've been using a 120 Ampere Hour deep cycle marine battery for several years, and have worn out several of them, charging my 6S2P A123 battery packs.
Also found that some of those deep cycle batteries might not last to long. Don't buy those "Deep Cycle Engine Starting" batteries. Mine lasted about 3/4 of a year, when it lost 75% of its 120 Ampere Hour capacity.
Right now, I'm using two deep cycle marine batteries in parallel, (no engine starting rating). (Some of those engine starting deep cycle batteries from as an example wallyworld are nothing but standard automotive batteries with carrying handles)
Take a look at my thread on this:
Also take a look at this on electrifying models of the 70 glow engine size:
Note that if you are pulling 1000 watts out of a 24 volt battery, that's 1000 watts/24 volts or 41.6 Amps. And, if that's a 12 volt battery, that's 83 Amps. Not many deep cycle batteries can handle that high of a continuous current.
Guess the bottom line is, buy a high quality 120 Ampere deep cycle battery, or two if you are planning to run 1000 watts. They will need to be connected together with fairly heavy guage wire, like auto jumper cables. I bought a pair of copper jumper cables, and fitted them with the large size Anderson Power Pole connectors as quick connect and disconnects.