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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.
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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
Marque de batterie : EVE
Modèle de batterie : LF280K
Chimie : Lithium Fer Phosphate (LiFePO4 ou LFP)
Tension nominale : 3,2 V
Tension de fonctionnement : 2,5 V – 3,65 V
Capacité nominale : 280 Ah
Capacité réelle : 290Ah-308Ah
Résistance d'impédance CA : ≤ 0,25 mΩ, CA, 1 kHz, 40 % SOC
Poids : 5,49 ± 0,3 kg
Dimensions (mm) : 207,2*71,7*173,7±0,5
Terminal : M6
Durée de vie du cycle : ≥ 6 000 cycles (0,5 °C/0,5 °C, 25 ± 2 °C, SOC ≥ 80 %)
Courant de charge/décharge standard : 0,5 C/0,5 C
Tension de coupure de charge/décharge standard : 3,65 V/2,5 V
Courant de charge/décharge continu maximal : 1 C/1 C
Courant de charge/décharge d'impulsion maximal (60 s) : 2 C/2 C
Fenêtre SOC recommandée : 10 % à 90 %
Perte de capacité résiduelle : par mois ≤ 3,0 %
Température de charge : 0℃~55℃
Température de décharge : -20℃~55℃
Nouveau - Spécifications des cellules de batterie LiFePO4 EVE 280K.pdf
Véhicule électrique, camping-car, vélos/scooters électriques, voiturettes de golf, bateaux, moteur de pêche à la traîne, stockage d'énergie solaire hors réseau et ESS.
NOTE!
1. Une cellule sera livrée avec 1 jeu de barres, 2 bouchons à vis et 2 cales gratuitement. (Par exemple, 4 cellules seront livrées avec 4 jeux de barres, 8 bouchons à vis et 8 cales.)
2. Chaque cellule doit être utilisée sous la surveillance, le contrôle et la protection stricts du BMS.
3. Avant la première utilisation, chargez toujours les cellules à pleine tension. | FAQ : Guide de charge des batteries LiFePO4.
4. Nous ferons correspondre (capacité, tension, résistance) toutes les cellules avant la livraison.
5. La batterie convient aux amateurs de bricolage expérimentés.
| Specification | Details |
|---|---|
| Battery brand | EVE |
| Battery model | LF280K (Latest version: V3) |
| Nominal Voltage | 3.2V |
| Operational voltage | 2.5V – 3.65V |
| Nominal capacity | 280Ah |
| Actual capacity | 290Ah – 308Ah |
| Chemistry | Lithium Iron Phosphate (LiFePO4 or LFP) |
| Cycle Life | ≥ 6000 cycles (Up to 8000 cycles for the V3 version) |
| Max Continuous Charge/Discharge Current | 1C (280A) |
| Max Pulse Charge/Discharge Current (30s) | 2C (560A) |
| Dimensions | 173 × 73 × 207 mm |
| Weight | 5.5 kg |
| Internal Resistance | ≤ 0.25mΩ |
| Recommended SOC window | 10% – 90% |
| Residual Capacity loss | Per month ≤ 3.0% |
| Charging temperature | 0℃ ~ 55℃ |
| Discharging temperature | -20℃ ~ 55℃ |
The order met my expectations. I am very pleased with the service and the quality of the cells, which were delivered on time.
Gute Qualität Werte der Zellen passen auch gut top.
A great seller. I'll buy from them again in the future.
The batteries are of very good quality. The internal resistance ranges from 0.18 to 0.20, offering an excellent price-to-performance ratio. There is no damage. The cell QR codes are consistent and clearly intended for 16S battery packs, which is very good. The voltage difference between the cells is only in the single-digit millivolt range. The capacity can only be determined during real-world use. However, based on my experience, I assume that all cells are well above 280 Ah.
Unfortunately, there was no tracking information, and it took six weeks from payment to arrival from China to Thailand.
La tension des cellules est extrêmement stable, avec des différences à peine mesurables en millivolts, et la résistance interne est très faible, ce qui promet une excellente efficacité et une longévité optimale. Même après plusieurs cycles de charge et de décharge, je n'ai remarqué aucune perte de performance. D'après mon expérience, la capacité réelle dépasse largement les 280 Ah indiqués, offrant une grande autonomie pour mon système.
Merci de vous être abonné !
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Gute Qualität Werte der Zellen passen auch gut top.
A great seller. I'll buy from them again in the future.
Express delivery in 5 working days!
The batteries arrived within 7 days, production dates from August 2025, original codes, voltages are all equal at 3.291V, and they have balanced perfectly during operation. Highly recommended!
The package arrived even though I did not receive shipping information, so I couldn’t track it. Nevertheless, the product works perfectly and the initial tests are very promising. Highly recommended!
