I'm building a project where two 18650 cells in series are the "desired" power supply. I'm thinking two 185650 cells with built in protection (not of ebay) in series. Can I just charge with a 12V supply with a series current limiting resistor? The ones I'm looking at are 2.4Ah so at 0.5C they need about 1200mA. discharged ~7V so around a 5 ohm resistor?
BTW, anyone know the current medical equipment power supply requirements? Are USB chargeable devices considered to be connected to the mains?
Mike.
Edit, as I can get these around the corner and I know the company won't sell junk, these are the cells I'm thinking of purchasing. https://www.jaycar.com.au/18650-2600mah-li-ion-protected-battery/p/SB2299
BTW, anyone know the current medical equipment power supply requirements? Are USB chargeable devices considered to be connected to the mains?
Mike.
Edit, as I can get these around the corner and I know the company won't sell junk, these are the cells I'm thinking of purchasing. https://www.jaycar.com.au/18650-2600mah-li-ion-protected-battery/p/SB2299