High energy density (120–180 Wh/kg) — about three times that of lead-acid batteries. For example, to achieve 500Ah capacity, a lithium battery may weigh only 50 kg, while a lead-acid system could exceed 150 kg.
Typical cost range for adding or replacing a 2-pole 220 breaker generally falls between $85 and $680, with most residential installations landing around the $125–$250 mark for a standard 20–30A breaker. For higher amperages, AFCI/GFCI protection, or difficult access panels.