Hey everyone! I've been looking into keychain-sized power banks like the Rolling Square Tao, Snap Wireless Power Pack Nano, or the Ini-U Snap Series. Most of these have pretty low battery capacities and I'm curious about their limitations. Ideally, I would love to see a capacity of around 3000mAh to 5000mAh to fully charge a modern smartphone. Is achieving this capacity in such a small form factor even feasible? Also, how have modern smartphones managed to pack such high-capacity batteries into their compact designs? Are there any inherent limitations in the circuitry? I know I could search this online, but I'd really like to get some thoughts from you all!
1 Answer
There’s definitely a big difference between a phone’s internal battery—which is designed and tested for efficiency—and a random portable battery that might be built with cheaper materials. The connections between the battery and your phone can also affect performance, so a little keychain battery isn’t really competing on the same level as a phone’s battery.
Fair point! I think the release of the INIU SnapGo P81-E1 makes my thoughts seem less unrealistic. It showed that there’s potential for better designs in these small gadgets!