16/01/2026 8:30 pm
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I’m currently using a Pichondria 5V 5A converter, and it works well with my 33W Xiaomi USB charger.
Now I need to run my Raspberry Pi 5 outdoors in the field for my Autonomous Farming Rover project, so I need a reliable battery pack.
I want to build a Li-ion battery pack because it gives the best value for money. My plan is to use:
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a proper BMS
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a safe charger/adapter
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and a stable 5V high-current output for the Raspberry Pi 5 using the pichondria board.
But I’m still learning hardware, and I don’t want to risk damaging the Pi. I also live in Nepal, so I need a solution that is safe, practical, and not easy to mess up.
Can you guide me step-by-step on how to build a safe Li-ion battery pack that can power a Raspberry Pi 5 reliably?
sushantniraula01 Topic starter
17/01/2026 7:35 pm
Or Is it possible to use a Lipo of 2200 mah of 30C. Or is it a overkill ?
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18/01/2026 10:39 am
1. Use a 3S or 4S Li-Po pack. These will have enough voltage which can be connected or soldered at the input of the 5V 5A board. The mAh depends on how long you want the device to run. Higher mAh = more runtime.
We cannot predict runtime on your device as we are not sure about the power consumption you have.
2. A normal easy set up would be, a charger that is connected to the battery pack (which will charge the li-ion battery). The pack will have a BMS, which will be good enough for 30W of current. For example, if you are choosing 3S, the minimum voltage of the battery pack will normally be 3×2.5V = 7.5V (2.5V minimum is taken for reference and could vary by battery packs). For 7.5V minimum voltage, we will need at least 30W/7.5V = 4A discharge BMS or higher.
3. The C rate of the battery pack determines how much current can you take out wrt the capacity. For example, with 10C discharge rate battery pack that is rated 1000mAh, you will be able to take out 1000 x 10 = 10,000mA or 10A of current. Higher C rate batteries are high discharge batteries. They are good, but might not matter to go above a limit as it will not have an impact on the performance or working.
Please let me know if you need further clarifications. If you can post URLs of the products that you are looking at (especially the battery pack), we would help you with it as well.
sushantniraula01 Topic starter
20/01/2026 6:43 pm
@jomon003
Can I use this power bank instead. ?? I guess creating the battery pack is too much for now. And a power bank would be easy to use for me. Is it safe and good to use? Or do you have any specific recommendations for me to use.
https://www.amazon.in/URBN-20000mAh-Charging-Compatible-Pass-Through/dp/B0F4RB36ZW/ref=sr_1_5?dib=eyJ2IjoiMSJ9.s1lJNvJvcI2sEjsA4L4xVMwjF6T656S8DAWeUA2m-WaHTq5wC3qkpbxiJ55G_O5ZmDsCL4wKzUBpY0kVYwLo91shiyYMiypsfWs0vFN9v8DiX6-ZqLmDyNWgvo5dLDvBr3cJCRw3PSf_OKZMKsFFK-Eoooz-zBuIG0hMawh5OS3hIvzCjUUlA2mJhJdYYHeAy0ZMrsCKtwnb7-vUa9qXVmPYIRSwjfOc_hwsjvzx_A4.8vCFKj0a2quHcTklJdtcZSGRQkJxHAkno0EHCnnaI-U&dib_tag=se&keywords=35%2Bwatt%2Bpower%2Bbank&qid=1768914673&sr=8-5&th=1
John 24/01/2026 10:34 am
It is advertised as USB-PD compatible with Pass through. Seems good. And it should work well.
The only recommendation is that the power-bank should be USB-PD compatible, with at least 30W power. This is to ensure that 5V 5A is possible.
Take a look at https://pichondria.com/2024/08/06/power-rpi5-using-powerbank/
