Does anyone know of a USB battery bank that does not shut off when the current draw is too low? I have a project that requires 5V and right now I am power it via my computer but I want to make it portable. I know I have lots of options (boost converters with batteries, lipo batteries with switcher …

I would just use a pack of NiMH or even lead acid rechargeable batteries. They aren't very finicky about how they are charged, in contrast to Li-based cells. In all cases, you need a low voltage cutoff of some sort.

Ok, I may have to look into that. I wasn't too worried about the charging aspect as the USB battery banks are very easy to charge. It was mostly the discharging aspect. I may have to just get a large capacity SLA and a 5V regulator and throw something like that together. Thanks for the input!

wes000000: Does anyone know of a USB battery bank that does not shut off when the current draw is too low? ... So that brings me back to my original question of does anyone know of a particular brand that doesn't have the protection circuitry? Google, as they say, is your friend ! (Discussed o…

Unfortunately, the other thread didn't answer the question either! It in fact muddies the waters further, implying that there exist "always on" USB power banks, but not citing any such devices (and "always on" is too generic to get useful results, in my brief googling just now). The OP is asking fo…

OK, maybe the thread itself wasn't helpful, I was specifically pointing to my previous answer - to avoid having to re-write or cut-and-paste it - explaining why they are simply not going to be "always on".

This thread of Nick Gammon has me thinking about capacitors, specifically supercaps although the one in his example is a normal one I think. A 1F supercap like this is less than 20mm diameter. Could that play a part in your solution?

This thread of Nick Gammon has me thinking about capacitors, specifically supercaps although the one in his example is a normal one I think. A 1F supercap like this is less than 20mm diameter. Could that play a part in your solution? Boy, things have changed, the line printers we worked on we'r…

I don't know when it was released, but now googling for ' "always on" USB battery ' led me to the Voltaic Systems V15 and V44 - Always On Battery Packs for IoT Ideal for IoT and time-lapse applications, Voltaic's signature Always On battery packs are designed to stay on regardless of p…

DrAzzy: Unfortunately, the other thread didn't answer the question either! There is a very good suggestion in there of combining a battery with a charging board and a regulator module. Avoid ebay for buying the batteries though, there's a ton of false listing that outright lie about the capacit…

USB battery bank without low current shutoff

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JimboZA March 14, 2015, 5:52am 9

The clue's in the name: super- cap...

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USB battery bank without low current shutoff

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