Had to replace first battery because it wouldn’t charge. EXP was very helpful with the replacement. The second battery works great on my BiPAP machine.
Very pleased with the quality of the product and technical support before and after purchase. Using in UPS mode and just the other night we lost power and my bipap machine did not miss a beat. Very Happy
Using primarily for Z2 CPAP while camping. My pressure is relatively low (6-9), and I only used 1/4 the battery over two nights powering the Z2 directly (12VDC). Battery looks to be well made, charged quickly and worked as advertised.