MEXICOWANDERER wrote:
Objective: Gang enough lithium in parallel to carry to and from hotel rooms, that would allow 8 hour use of CPAP with humidifier plus a 5 watt LED reading light for 3 hours. Because of a bad disc, lift ability is limited to 2 kilos. This is Mexico. Electricity is about as dependable as safe drinking water out of a faucet.
Have you considered using a small collapsible lightweight hand truck and a standard AGM deep cycle battery?
I use a pair of small 12 volt SLA batteries intended for a UPS in my ice fishing shack, they are 3.5 pounds and 4.5 AH each, so 9 AH together. They run the LED lighting and cell phone chargers all day with no problem.
