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Comprehensive Battery Solutions & Energy Storage Systems

Discover our complete portfolio of advanced power and energy storage solutions. Since 1979, ZJ JUST has been a leading manufacturer dedicated to engineering premium batteries for diverse global industries. From reliable automotive start-stop batteries to cutting-edge lithium home energy storage systems (ESS) and heavy-duty solar deep cycle batteries, our products are manufactured under strict ISO/CE certifications. Browse our categories below to find the perfect power source for your vehicles, off-grid projects, or commercial applications.

The Frequent FAQs of Products

What product certifications and standards do you comply with

JUST products comply with FDA food-contact, EU 10/2011, LFGB, REACH, RoHS, ISO 9001, ISO 22000, BPA-free (<0.05 ppm), phthalate-free (<0.1%), and heavy metals below EN 71-3 limits.

What packaging options do you offer and can you do custom packaging

JUST offers bulk bags (1–25 kg), stand-up pouches (50–1000 g), and cartons. Custom packaging: shapes, sizes, 1–6 color printing, matte/gloss, zipper options, MOQ 3,000–5,000 units.

What is the product warranty period and after-sales service policy

JUST products include a 12-month warranty covering manufacturing defects; we provide technical support, spare parts supply, and paid repair services beyond warranty.
Your Best battery Supplier
We provide customized lithium battery and energy storage system (ESS) solutions for residential, commercial, and industrial applications. Reliable performance, certified quality, and professional OEM/ODM support.