At this price, these are the best value for 12V, 24V, 36V, or 48V systems. Parallel them for higher capacity or series connect up to 48V (fully charge each battery first for proper top balance).

You will receive complete batteries in the cases shown in the first photo. Additional photos show the high-quality internal construction.

Specs:

• 12.8V 34Ah
• 4S10P configuration (40x 26650 3.2V 3400mAh LiFePO4 cells)
• Medical-grade JBD-HP04S024 BMS
• Max charge/discharge: 32A
• Weight: 10 lbs
• Dimensions: 5⅛" D x 7¾" W x 6¾" H (including posts)
• Overcharge cutoff: 14.6V (3.65V/cell)
• Discharge cutoff: 11V (2.75V/cell)
• Bolts included

These are lightly used medical computer cart batteries, typically only 2 years old. Capacity tested at ~90% of original. Perfect for power chairs, camping, RV, solar storage, or portable use.