B4R Question Battery for robotics

Instead of two power supplies you can have a single battery of multiple Li-ion cells (3.7V ,3300mAh each). You can then step up 3.7V to 5V for arduino and another step up converter to generate 6V for motors.
Advantage is that the weight reduces as step up modules are light ( and cheap too)
I have used this module:
https://www.aliexpress.com/item/who...Converter-Module-2-24v-Input/32474367475.html

One important thing you should consider about Li-ion batteries, they should be well controlled to avoid over discharge and high current drain, otherwise they may cause serious damage. You may use one of those cell phone power banks, they include charge,discharge and step up circuitry in one package for reasonable price. I don't think supplying 5V to 6V-motor will affect performance, so you have one power supply for them all.

rbghongade said:

Instead of two power supplies you can have a single battery of multiple Li-ion cells (3.7V ,3300mAh each). You can then step up 3.7V to 5V for arduino and another step up converter to generate 6V for motors.
Advantage is that the weight reduces as step up modules are light ( and cheap too)
I have used this module:
https://www.aliexpress.com/item/who...Converter-Module-2-24v-Input/32474367475.html

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Both Arduino and motors will be happy with two like batteries in series, providing 7+ volt and you don't need the converters.

derez said:

Both Arduino and motors will be happy with two like batteries in series, providing 7+ volt and you don't need the converters.

Click to expand...

Which battery has a lot of current and low weight?

Eme Fibonacci said:

Which battery has a lot of current and low weight?

Click to expand...

I use 18650 5000mAh Li-ion Rechargeable Batteries with ESP8266 devices. If the power management is used and monitored correctly on ESP devices. Devices can be used for months without the battery dying...