| General > General Technical Chat |
| Is Big Clive right about lithium battery charging? |
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| SiliconWizard:
Or maybe define "module makers". Or whatever. Just because there are zillions of modules, mainly targeted at hobbyists, made around the TP4056 (which itself comes in various clones, with slightly different characteristics, fun stuff), doesn't mean that this is the only asian chip available or that it is even relevant. Yes, there is a life beyond the TP4056! Believe it or not. ;D |
| Peabody:
--- Quote from: amyk on December 20, 2022, 10:36:40 pm --- --- Quote from: Peabody on December 19, 2022, 03:04:27 pm --- --- Quote from: sleemanj on December 18, 2022, 10:53:10 pm ---A P-Fet bypass to provide the load directly from a connected supply is pretty trivial. It's kinda weird that none of the chinese TP4056 boards include one, and yet for powerbanks almost universally power the load directly from a connected supply. --- End quote --- Yes I've always thought it was strange that the module makers of the Far East don't seem to know about power sharing. You even have combination charger and boost converter modules, but they don't have power sharing either. There are some charger ICs with that feature built into the chip, but they don't come in hobbyist-friendly packages, and few if any modules use them (maybe Adafruit is an exception, but that would not be low cost). --- End quote --- Because they know it's not necessary and just increases cost? --- End quote --- Well, even if power sharing isn't necessary, it would prevent the cycling between 4.2V and 4.1V that occurs when the load current is less than the termination current. And it would eliminate any potential startup issues if the battery is discharged to below 3V and the load current is greater than the initial float current. Some might want those benefits. |
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