غير سامة للماء 12V ليثيوم بطارية 21Ah لخارج الشبكة النظام الشمسي

Non-toxic Waterproof 12V Lithium Battery Pack 21Ah for Off-Grid Solar System Feature: 1. High charging & storage efficiency 2. Lighter weight, with the best power-to-weight ratio 3. Longer life, more than 2000 cycles 4. No memory effects 5. Low self-discharge rate, less than 3% monthly 6. Environment friendly, Non-toxic, non-contaminating and no rare metal Specification: No. Item General Parameter Remark 1 Rated Capacity 21Ah Standard discharge(0.2 C5)after standard charge(0