I don't think weight will be an issue. I'm contemplating trojan t-105 batteries currently, which are 6 volt batteries. They come as a 225 AH rated battery, and you'd need at least two of them to get to 12 volts. At 62 lbs a piece, they stack up in weight fast.
In order to avoid a more than 50% discharge scenario, I need to "oversize" the battery capacity of lead acid systems, so I'd probably want to acquire 8 of those batteries for a 24 volt pack that is solar optimized, or a 12 volt pack for a plug in recharge optimized system (no solar)
In the end, that amount of lead acid batteries will weigh significantly more than any lithium battery pack of similar physical size.
Originally Posted by cadillackid
some of our city busses are still hybrids.. I dont know who makes those coaches... they have huge batteries on the toprail of the bus.. (same place as the CNG tanks are in the CNG models)...
an E-car battery pack gives you a decent amoutn of power storage (as long as you manage it well)... lithium batteries dont like being fully charged or fully discharged... you would have to put a strict charge management system on to get longevity.. in my chevy volt it had a 16.1 kwh pack.. but they only gave you access to 10.5 kwh... as they only discharged it to 20-25% and charged it up to 80-85% .. theoretically a pack managed in that range can last through 1000s of charge cycles... I can imagine at least 1 or 2 charge cycles per day in an RV environment.. the packs are also heavy.. I have no idea how heavy a converted skoolie is compared to a fully loaded in-service school bus.. but probably there is plenty of extra weight capacity available, so a 1000 lb battery woudnt hurt?