I'm looking at 5s 5 ah packs x8 Then refering to the packs themsevles, either 4s 5 ah or 2p 4s 10 ah depending on the lenth of riding. 72v pack.
This years experience tells me trying to do much charging at the track is a pain. Not a lot of plugs around, the one hot one I found was in the public area. I suppose the pits are fairly secure, but even there, leaving $50 bills laying around seems a little bit risky. The thing to do is bring a lot of battery to the race. You'd need 30 min charging to really be able to cycle a pack practically. Run one while charging the other. That's what I did with the pings this year, and my poor wife had to do a lot of battery guarding.
Thanks for the real world data on charge times. I think I'll go order the 250 watt charger now, and a power supply. Edit, Bought the smaller one after all, and got two.
Later on I'll get around to begging you guys to sell me your older lipo packs.
Later in the summer I plan to buy at least 4 of the better c rate 5s packs so I'll at least have that to run if they do have a halloween race this year. Even if I run out halfway it will be cool to see how 40 mph stacks up in the field. If they don't do a race, I'd like to go get some track time for testing purposes of range at higher speeds.
Lastly, I have a coulple of generators. Does anybody know if these chargers have any issues with just hooking up to the 12 power on a generator? Or is it better to use the ac plugs and a power supply? Charge a big lead battery with the generator?