Hello there!
I read a lot of topic from this and other forums but I don't find a good answer to my problem. I want to power my arduino nano matter/nano 33 IOT with a rechargeable battery. I am not sure if it is better to use AA batteries that are rechargeable or a single cell Li-Ion battery (AKKU SOLD333284: Li-Ion Akku, SOLDERED 333284, 1800 mAh, 3,7 V bei reichelt elektronik) with a MP2636 Power Booster & Charger Module (MP2636 Power Booster & Charger Module — Arduino Official Store). I will power both through the Vin Pin.
Thank you for your help!
I completely agree. I am also not sure which of these batteries would be best for you to use. If only I knew more about you plans.
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Li-Ion batteries can be dangerous.
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Suggest you use rechargeable NIMH AA batteries.
However, we need more information.
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Safest option would be power bank.
No need for separate charge controller and battery protection circuits.
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Thank you for the help already. I want to use the Arduino for controlling small Micro-LED-wire-lights. They need 3-5V and around 7mA per hour. Combined with the Arduino matter this would draw around 25-30mA. After having read these suggestions I will probably use 1.2V, 1.900mAh rechargeable batteries for the one outdoor and a powerbank for the one indoor. Has anyone suggestions for a battery holder?
No sense here. 7 mA is not related to time anyhow. You should post the specs of your micro-led-wire-lights...
Yeah you are right but this all the information I got from the product page. I will just use a big enough battery holder for nimh AA.