Hi,
I'd like to buy a LiPo battery now for my HEGduino and soon also for the V2.
My questions:
In the progress report you wrote "[...] they can still get *VERY* hot nearly instantly when compromised - even with the short-circuit protection. So that makes it a bit of a safety risk even though you will find these batteries in most wearables these days. My issue is I don't have a hard case for this yet, and I am not going to burn a hole in my own or someone's head if I can help it, so I'm trying to come up with something by initial release to make the battery a safe inclusion via some kind of hard case." Did you find a solution for this yet or when the V2 december batch (which I ordered) ships? Can I buy a LiPo battery that already has a hard case? Would it be any worse to simply use a powerbank? That sounds safer.
On a picture in your progress report there's a LiPo battery with 3.7V and 500mAh. Is that enough for using the HEGduino for up to 45 mins? And is 3.7V also correct?
I don't know anything about EE. Is there something else I need to know about using such a battery for my HEGduino?
Hey @aberratio ictus aberr To respond to your questions 1. Well I found a workaround for the hard case (theres a nice slot between the esp32 and flex board) but then hit another wall trying to ship batteries to Alaska as it either costs an arm and a leg or is straight up refused by my shipping services. So no battery till I can work with someone in the lower 48. 2. 500mAh will net you 3-4 hours on wifi on the V1, at least double on BLE or USB modes by my math. I just ordered (and got turned around) 702050 LiPo batteries (700mAh) with JST PH 2.0 headers off Aliexpress for like 2 dollars a pop. They are on ebay too. The LEDs on the new devices are higher powered but have microsecond pulses so it should be about the same lifetime. One reason I chose the ESP32 was for its amazing power consumption and did a bit more to improve it firmware side. 3. Just make sure you get the ones with the right headers. Dont get fast discharing batteries for RC cars or drones.