The battery I ordered turned out to be defective. I wrote you a corresponding letter on this topic with all the evidence. I am waiting for feedback and compensation. Sincerely, Mikhail

I’m really satisfied with this battery. I especially like its compact size and lighter weight compared to other similar models — it makes installation and handling much easier. The built-in Bluetooth feature is a great addition, allowing me to monitor the battery status conveniently from my phone. Also, direct delivery to Ukraine was smooth and hassle-free. Overall, a great product and a very positive experience.

good battery, thanks to the seller

Дякую,за акумулятор,зараз користуємся і тестуємо.Трохи була нарозбериха з доставкою.прийшлось їхати вслужбу доставки і отримувати там.Бо до дому за адресою так і не привезли

Заказ этот аккум, оплатил ,прислали на почту письмо, что нет в наличии и можно доплатить 450грн и получить такой же но с блютозом. Согласился, прислали ссылку оплатил.Пришло быстро новой почтой, когда прошло границу, то в приложении поменял адрес с курьерского на отделение (по умолчанию доставка курьером). Аккум хороший ,бмс работает. Пришел заряжен на 70проц. Зарядкой на 10 ампер заряжает 10% в час. Подключал к инвертору , 300 ват 20 ампер тянет норм. Покупкой доволен, рад что версию с блютуз купил ,можно мониторить через телефон все.

Швидка доставка 5 днів з польського складу. Під час замовлення цього акумулятора вже не було в наявності і продавець запропонував мені за доплату версію із блютуз. Тому цей відгук стосується Humsienk Акумулятор 12В 100А·год LiFePO4 (Bluetooth). Батарея норм, прийшла зарядженою на 50%. Радіус дії блютуз дуже малий - буквально 3-4 метри від батареї і зв'язку вже немає.

Absolutely awesome good build quality arrived. Perfect, sealed connections beyond the call of duty. Charge and discharge.Flawlessly every day could not be happier.

Everything seems to be working as it should lots of power should last me about 4 days without Sun

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's capacity was tested with an electronic load and matches the stated capacity.

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.

I was glad it was there in case of accidents.

Wielki plus za kontakt ze sprzedającym. Bateria powyżej deklarowanej pojemność. Polecam jak najbardziej firmę humsienk.

Nice Bluetooth LifePo4 battery. Just hook up to LiTime 48V 5000watt solar inverter and Sungold solar panels. Working well.

I am very happy with this purchase and when I save up more money, I will buy more of the same type.

I purchased because of the price, weight, and favorable teardown reviews. The kwh-to-weight ratio is the best I have found among LFP batteries of similar capacity.

The battery was directly ordered from their website and was promptly shipped; it arrived with a 13.20v charge (standard for shipping). Included was an instruction manual and 4 quality lock-washer bolts.

I will install 2 pcs LiFePO4 in next 2 months in my 12m long boat. At this moment I have no experience with it.

Ευχαριστώ πολύ για την άψογη εξυπηρέτηση. Η παραγγελία παραδόθηκε μέσα σε 7 ημέρες, με εξαιρετική συσκευασία και χωρίς το παραμικρό πρόβλημα. Είμαι απόλυτα ικανοποιημένος από τη συνεργασία και σίγουρα θα σας προτιμήσω ξανά.
_----------Thank you very much for the excellent service. The order was delivered within 7 days, with perfect packaging and in excellent condition. I am fully satisfied with the transaction and would definitely choose you again.

Batteries arrived fast and on schedule. Capacity and technical specifications as listedon site. 4 in total mounted on my wall running my house at the moment.

So far the batteries have been holding up. My house has been off the grid for a few weeks now. I bought 2 batteries that are connected in parallel now. However, I noticed that the voltage vs state of charge doesn't match up for both batteries.
Explanation: Battery A is at 94% with a voltage of 53V and battery B is at 84% with a voltage of 53V. So the voltages of the batteries are normally close but the battery percentage is different. I am not sure if that will eventually cause any issues

Package could be better, now it had hole in side and small nick in side of battery. Only cosmetic but still... Battery seems to be like it should be, quality product.

I live in a small downtown city on a busy street and my apartment door is located on the side of the building down the driveway towards the back. It's a small 6 unit building with 2 units located out front and the stairs are just 2 feet from the sidewalk. Because of the issues with stolen packages and with the advice of FedEx, Amazon and all deliveries have special instructions saying specifically to deliver the packages down the driveway to unit E which is my unit and there's a porch and door to my unit. If the instructions are followed I have never had any problems because it's all fenced in and can't be seen from the road, plus I have several cameras. But due to the FedEx driver not following the deliveries instructions my $600 purchase was stolen and FedEx has been useless when they are 100% responsible for not following instructions. SO I DECIDED TO REACH OUT TO HUMSIEINK DIRECTLY AND EXPLAINED THE SITUATION TO THEM AND THEY RESPONDED SO QUICKLY I WAS SURPRISED AND AFTER SPEAKING ON THE PHONE WITH THEM AND AGAIN EXPLAINING WHAT HAPPENED AND NOT KNOWING WHAT TO EXPECT AND THEY ARE GOING TO BE SENDING ME OUT WHAT I ORDERED AND REPLACING THE STOLEN PACKAGE. I CAN NOT SAY ENOUGH GREAT THINGS ABOUT THE WAY THIS WAS HANDLED. ALSO THEY WERE SO KIND AND MADE ME FEEL SO MUCH BETTER AND MADE SUCH A FRUSTRATING SITUATION AND TOOK SUCH GREAT CARE OF ME. HIGHLY RECOMMEND