(Continued from Part 1. This concludes the article.) Battery Alternatives When one acquires one or more of these flashlights, how do we keep them running if the batteries are not available at the local store or there is not power during a blackout to run a battery charger? Over time I have come to appreciate four types of batteries or cells to power my flashlights and buy them accordingly. AA lithium or rechargeable NIMH, CR123 primary cells, 18650 rechargeable lithium ion and cells or batteries that are built into the light and charge by USB or magnetically. These cells can …
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