7S3P 18650 lithium battery packs

Technical datas for 18650 lithium battery packs:

Key components and selected materials:

Professional test system:

Payment and shipment:

Quality and Guarantee:

Product standard: From design, material preparation to production, quality control, sales and customers service, MassPower batteries follow the ISO9001, CE, RoHS international standard.

Life span: All MassPower batteries use full A+ battery cells. No A or B grade low quality cells inside so that MassPower batteries have longer working life and larger capacity. We guarantee full and real labeled capacity.

Power management: All MassPower rechargeable batteries have built-in high quality PCB board, chrging protectors, thermal protectors and circuit breakers, effectively avoiding the over-charge, over-discharge, over heating and short circuit. You will have complate confidence on our products.

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