0
votes
1answer
579 views

how to run 12V x 2 battery inverter in (12V x 2)+(12V x 2)?

apologies if i can't ask this in this stack. My 24V sine inverter runs on 12V x 2 lead acid old batteries (left with ~50% capacity). I want to buy two new leadacid batteries but still try to ...
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votes
3answers
3k views

Powering laptop from 12V sources without inverter

This question has two parts: 1) How inefficient is it to boost 12V to 120V and then back to 12V as in using a traditional car power inverter to power a laptop (i.e. the 12V car battery power is ...