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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
Notre prix actuel est le prix final, livraison gratuite, droits de douane et taxes gratuits, vous n'avez pas besoin de payer d'autres frais.
【Caractéristique】BMS intelligent JK 16S 200A intégré avec Bluetooth, écran, avec équilibrage actif 2A
Utilisation : Ce kit ne peut pas être utilisé avec des cellules trop gonflées. Nous recommandons les cellules Better-ess ; elles conviennent parfaitement aux amateurs de bricolage.
【Prise en charge des cellules lifepo4】Prise en charge des cellules 280Ah, 300Ah, 304Ah, 314Ah 320Ah
【Taille】750*450*268mm
【Kit DIY】 Comprend un boîtier, un BMS, un écran d'affichage, un interrupteur, une carte de communication, un équilibreur actif, une carte en résine époxy, des bandes de connexion, des pôles positifs et négatifs et des vis et d'autres accessoires


Dies ist meine nächste Bestellung bei diesem Lieferanten und wieder einmal ist alles auf hohem Niveau. Alle Batterien und Gehäuse sind in einwandfreiem Zustand angekommen. Der Lieferant ist professionell. 100 % Garantie.
John
Camille
Das Paket kam gut verpackt und 2 Tage schneller an. Ich hoffe, die Batterien sind von guter Qualität, die ich empfehle, und ich hoffe, dass ich in Zukunft bei dieser Firma kaufen werde
Die Teile haben gepasst, musste nur noch montiert werden. Gute Anleitung.
Da finden sich auch Lauen zurecht.
Bei Problemen und Fragen gibt es Ansprechpartner, die wirklich helfen.
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!