We offer FREE shipping on all orders to most countries and regions.
Orders shipped from the EU warehouse: Free shipping is available to mainland EU countries (excluding remote islands).
Orders shipped from China: Free shipping is available to the EU, US, and other major regions (excluding remote islands).
Note: If your shipping address is in the UK, Switzerland, or Norway, and your order is shipped from our European warehouse, additional shipping fees will apply. Any customs duties or taxes incurred for these destinations must also be covered by the customer.
After you place an order, we will process it within 1-2 business days. Depending on your shipping address, we will ship from the nearest warehouse so you can receive your items as soon as possible.
Contact us at service@better-ess.com to check the stock level of your nearest warehouse.
We stand behind the quality and performance of our products through comprehensive warranty coverage.
All LiFePO4 Cells Batteries can receive a 5-year warranty, when used correctly according to the product manual instructions.
Mobile ESS and DIY Case Kit are also warranted for 5 years.
Battery chargers carry a 2-year warranty.
Accessories are covered by a 1-year warranty.
All warranties are effective from the date of purchase by the end user. Correct installation and usage as specified in the product manual are required to maintain warranty eligibility.
Please take time to carefully review the manual prior to setup and operation to ensure proper use and long-lasting performance from your BetterESS LiFePO4 System. We're here to support you throughout the warranty periods.
We provide lifetime customer support to ensure you enjoy a worry-free experience with our products.
Whether you have questions about installation, usage, or maintenance, our dedicated team is always here to help — anytime you need us.
Contact us (Email): service@better-ess.com
Our current price is the final price, free shipping and tax, you don't need to pay any other fees.
No tax is collected, and you don't need to pay any additional taxes.
Note: This models shipped from China come with Active Balancer and Temperature controlled fire extinguisher
Model | BE-WM51200-100A-HWB (5120W) | BE-WM51200-200A-HWB (10240W) | ||
Nominal Capacity | 100Ah@0.2C | 200Ah@0.2C | ||
Nominal Voltage | 51.2V(16S) | 51.2V(16S) | ||
Energy | 5120Wh | 10240Wh | ||
BMS | 100A | 200A | ||
Internal Resistance | 40≤mΩ | 100≤mΩ | ||
Cycle Life |
>4000 Cycles @ 0.2C/25℃ Charging/Discharging at 100%DOD, Until 100% Capacity. | >4000 Cycles @ 0.2C/25℃ Charging/Discharging at 100%DOD, Until 100% Capacity. | ||
>6000 Cycles @ 0.2C/25℃ Charging/Discharging at 80%DOD,Until 80% Capacity. | >6000 Cycles @ 0.2C/25℃ Charging/Discharging at 80%DOD,Until 80% Capacity. | |||
Self Discharge | ≤3.5% per month at 25℃ | ≤3.5% per month at 25℃ | ||
Charging Voltage | 56.8-57.6V | 56.8-57.6V | ||
Charging Mode(CC/CV) | At 0℃~45℃ temperature, charged to 54.75V at a constant current of 0.2C5A, and then, changed continuously with a constant voltage of 54.75V until the current was not more than 0.02C5A. | At 0℃~45℃ temperature, charged to57.6V at a constant current of 0.2C, and then,changed continuously with constant voltage of 57.6V until the current was not more than 0.02C. | ||
Charging Current | 40A | 40A | ||
Max.Charging Current | 100A | 200A | ||
Discharging Current | 40A | 40A | ||
Max. Continuous Current | 100A | 200A | ||
Max.Pulse Current | 200A(<30S) | 250A(<1S) | ||
Discharging Cut-off Voltage | 43.2~44.8V | 43.2~44.8V | ||
Charge Temperature | 0℃ to 45℃(32℉ to 113℉) @60±25% Relative Humidity | 0℃ to 45℃(32℉ to 113℉) @60±25% Relative Humidity | ||
Discharge Temperature | -20℃ to 60℃(-4℉ to 140℉) @60±25% Relative Humidity | -20℃ to 60℃(-4℉ to 140℉) @60±25% Relative Humidity | ||
Storage Temperature | 0℃ to 45℃(32℉ to 113℉) @60±25% Relative Humidity | 0℃ to 45℃(32℉ to 113℉) @60±25% Relative Humidity | ||
Water Dust Resistance | IP55 | IP55 | ||
Cell & Format | IFR N100,15S1P | IFR N100,16S1P | ||
Casing | SPCC | SPCC | ||
Dimension(L*W*H*TH) | 742*420*235mm | 700*420*235mm | ||
Weight | 86Kg | 107Kg | ||
Terminal | 120A quick plug self-locking plug*4 | 120A Quick-plug self-locking plug | ||
Expand | 2-15 in Parallel | 2-15 in Parallel | ||
Communication Ports: | RS485/CAN*2, RS232*1 | RS485、RS232、CAN | ||
Compatible Inverter Brands | Growatt、Deye、Goodwe、voltronic、Sofar、vICTRON、Megarevo、SRNE、 PYLONTECH、Luxpowertek、Sorotec、SMA、GINLONG、MUST、TBB、STUDE | Growatt、Deye、Goodwe、voltronic、Sofar、vICTRON、Megarevo、SRNE、 PYLONTECH、Luxpowertek、Sorotec、SMA、GINLONG、MUST、TBB、STUDE |
Precautions:
•No matter what the charging model is, once the temperature of the cell is above the absolute charging temperature, charging should be stopped.
• Please check the orientation of the positive and negative terminals before packaging.
•Connect the terminal or wire to the battery module, and pay attention to insulation to prevent short circuit.
• When not in use for a long time, the battery should be stored in a cool and dry place (<35°C, 30%~50% SOC, charge and discharge once every 3 months).
• Do not place the battery in direct sunlight or a heat source.
• Do not wear metal jewelry (such as rings, watches, accessories, etc.) when handling the battery unit.
Important Notes:
Do not charge beyond the maximum charging rate.
Do not disassemble or modify the battery.
Do not throw or hit the battery.
Do not pierce the battery with sharp objects (such as nails, knives, pens, electric drills).
Do not mix with other types of batteries or modular units.
Do not excessively squeeze the battery during use.
Do not place the battery in a high temperature greater than 60°C.
Do not use conductive materials to connect the positive and negative terminals (such as metals, wires).
Using these LiFePO4 cells for my backup power setup. They charge quickly and discharge efficiently. Highly recommend!
Thanks for subscribing!
This email has been registered!
Battery capacity is very large, can reach more than 295ah, after 15 days of transport received the battery is very good, no damage, I am very satisfied
Einfach perfekter Service Von der Bestellung bis zur sehr pünktlichen Auslieferung perfekt. Fragen per Mail werden schnell und höflich beantwortet. Die Qualität der mir gelieferten Zellen ist mehr als gut, wenn noch der wirklich gute Preis berücksichtigt wird, beinahe unglaublich
Happy with purchase and would recommend. Unit arrived a month early (ordered end of march, expected start of june, showed up start of may) though i didn't know it was coming until fedex showed up at my door.
All ok. Equal voltage on all. Batteries are all flat, none of battery is swolen even 1mm.
Schnelle Lieferung, sehr gut verpackt, Kapazität aller Zellen entsprechen den Angaben der mitgelieferten Zertifikate, qualitativ hochwertige Anmutung