The world is shifting away from fossil fuels and will one day become fully electric.in the present world ,lithium-ion is the most promising chemistry of all.... # 18650 battery holder with pcb module designed for making 14.8v li-ion 18650 battery pack in 4 series 1 parallel configuration with 4.0a rate limited by pcb installed # each holder is design to hold 4 pcs of 18650 cells in series # pcb (4.0a limited, manufacture part# pcm-l04s07-379) installed on front surface for protect the battery. Online shopping for best gadgets, electronic, variety of led flashlights, diy parts and accessories at best prices, shops with free worldwide shipping and international delivery..
One response to review: nitecore nl1835 3500mah 18650 protected li-ion battery. Installing the battery holder is the next step. i used a 2-cell holder made by cutting the two outer cell positions off of a side-by-side 4-cell holder.. 18650 batteries are rechargeable cells used to power high performance electronics, such as laser pointers and vaporizers; the best overall 18650 battery: lg hg2 (20a, 3000mah).

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