Bests & Worsts Reviews from Amazon

I bought the 300 amp hour battery and it is rated at a maximum discharge rate of 200 amps. I wired a Progressive Dynamics PD9160ALV 60 amp lithium ion battery converter up an charged for five hours until the battery reached a voltage of about 13.5 volts. The inverter I used is a 2200 watt Giandel pure sine wave power inverter wired to the battery with the supplied #2 wire cables with an AiLi volt/current meter using the 350 amp shunt. The inverter was switched on and everything seemed to be working. I plugged in a 900 watt coffee maker and it worked for a couple of minutes and the ammeter was shown a current of 100 amps. Then everything went dead. None of the fuses were blown, but the battery voltage had dropped to 4.53 volts, as shown in the picture. I contacted Amazon and they said that since the battery was shipped from Chins, I needed to wait for them to contact me. It is Saturday, 2/27/2021, day two and I am waiting for a response from the company about what to do next as far as returning the battery, that by the way, weighs about 68 pounds in the box. I will update this posting after a response from Chins. Update (3/1/2021): Allen, at the company offered to send me a small 14.7 volt 10 amp charger that they said will reset the BMS to restore the battery initial condition or send the battery back and receive a replacement. He also offered as another option a full refund. At this point I am opting for the refund. The battery has the capacity I need, but I think there may be some variability in their battery management system and you may very well get a battery that will work for your situation. In the future I may want to use the full 200 amp discharge rate that the specs say this battery can deliver and think that I may have a problem in that situation. The company was fast to provide some solutions to my problem and that is a definite plus in working with this company. Update 3/11/2021: I received a refund of my purchase, but I did end up paying UPS $105.21 to ship the battery back. The company said they would reimburse my shipping, but has ignored my last two emails about actually reimbursing me for the shipping cost, which I have yet to receive. I have since bitten the bullet and purchased two Battle Born batteries, which have a stellar reputation for their product and I will feel happier about my purchase and not have to worry about any safety or performance issues.