Cheap Lithium as a 2nd battery in 4WD or RV. Capacity is likely real. Get a capacity meter like this one Max. Charge Current: 50A Max. Continues Discharge current: 50A
Similar to a previous deal posted for this 100Ah Lithium battery, different eBay seller (though possibly same as outbaxcamping anyway) These have a 50A BMS so not possible to run more than 600W and I …
These are amazingly cheap for what they are. Not much time left for such a rare bargain. If you don't know what this is you can skip it, but for anyone interested in setting up offgrid power …