I recently installed four Humsieng 48 V 150 Ah lithium batteries (configured as a 48 V, 600 Ah bank) to pair with my EG4 12000XP V2 inverter, and the performance has been outstanding. These batteries deliver stable voltage, strong discharge capability, and excellent runtime under real household loads.
Electrical Performance
• Nominal capacity: 150 Ah per battery (600 Ah total in parallel)
• Usable energy: ~28.8 kWh total at 48 V
• Voltage stability: Holds voltage extremely well under load, with minimal sag even during high‑demand events
• Charge acceptance: Smooth charging curve with predictable behavior when manually setting charge parameters on the EG4 inverter
• Peak discharge: Easily supports whole‑home loads through the 12000XP V2 without any instability
The battery was delivered with a faulty BMS.
Customers support didn't even respond to my request.
You're buying a Schrödinger's cat in a poke.
The battery is good value the money. The capacity, cables, and form factor are all great. The Bluetooth app works well and I was able to communicate with EG4 6000XP (capacity and SOC) using the inverter's lithium battery setting 2.
I had two issues with my batteries. First the packing material were insufficient to protect the battery during shipping. The steel case appears to be a bit thin for the weight of the battery and a couple of corners had some damage and the front panel of one of my two batteries also had dimples in the steel from light damage.
Another issue I experienced with both batteries was related to low temperature discharge cut off. There are two low temperature cut off settings, one for charging and the other for discharging. The low temperature cut off for charging works correct, but the low temperature cut off for discharge does not. When the battery temperature falls below the charge cut off set point, the battery also also disables discharge (despite a lower discharge cutoff set point). This effectively means you can't discharge these batteries below freezing.
I was able to overcome the low temperature discharge cut off issue by building a small insulated enclosure and added some greenhouse heating pads to keep the batteries warm enough to charge and discharge.
Although there wasn't a firmware patch to fix the low temperature discharge cutoff, communication with Humsiemk customer service was pretty good. They were responsive and made a genuine effort to achieve a satisfactory outcome.
Ευχαριστώ πολύ για την αποστολή των μπαταριών, θα κάνω σύντομα και νέα παραγγελία
I was bit skeptical at first because I never heard of the brad before but I went ahead and ordered a 2 pack of the 320Ah batteries because they had a presale and got a good deal, unfortunately they were lost at delivery due to FedEx not following delivery instructions and after reading some of the reviews about lost packages from FedEx I think Humsienk should not use their services, UPS could be a better option, however, I did added shipping protection with my purchase. I contacted costumer service to let them know about the situation and Arrow was very responsive and arranged for a replacement package, I got them after few days and my first impression was how well packaged the batteries were, I did a quick test after a couple of days to check the state of charge and they both showed 13.19, 13.20 volts. Batteries seem well made and solid and so far they are working great. I give 5 stars to Arrow from costumer service and to the product quality.
