How to power an outdoor (streetlight-type) light with car/truck battery overnight?
1) Is it even possible to power something like a high pressure sodium lamp of 100-400 W from a car battery for about 8 hours?
2) How would you set this up?
3) If the battery is getting drained to empty (or close to empty) every 2nd or 3rd night, what will be the approximate lifetime of the battery?
Thanks for your help!