# Battery power for Pi Zero 2 W + 7.3" e-ink display **URL:** \ **Category:** Discussion\ **Created:** [November 22, 2025, 7:44pm UTC](https://forums.pimoroni.com/t/battery-power-for-pi-zero-2-w-7-3-e-ink-display/28491 "2025-11-22T19:44:23Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![remi](https://avatars.discourse-cdn.com/v4/letter/r/ed8c4c/32.png) [@remi](https://forums.pimoroni.com/u/remi)\ **Post date:** [November 22, 2025, 7:44pm UTC](https://forums.pimoroni.com/t/battery-power-for-pi-zero-2-w-7-3-e-ink-display/28491/1 "2025-11-22T19:44:23Z")
Hi everyone, I have a Raspberry Pi Zero 2 W driving a 7.3" e-ink display. Currently, the display refreshes once every hour via a script, and everything works fine when powered from the wall. For convenience, I’d like this setup to run on battery, ideally autonomously for days. Does anyone have ideas for a battery setup or wiring solution? I’m looking for something that: - works with the Pi Zero 2 W - can provide enough current for both the Pi and the display - allows easy recharging - ideally can keep the Pi powered while charging the battery Thanks in advance for any advice or experiences! ---
**Author:** ![bablokb](https://avatars.discourse-cdn.com/v4/letter/b/ee59a6/32.png) [@bablokb](https://forums.pimoroni.com/u/bablokb)\ **Post date:** [November 23, 2025, 9:06am UTC](https://forums.pimoroni.com/t/battery-power-for-pi-zero-2-w-7-3-e-ink-display/28491/2 "2025-11-23T09:06:54Z")
Read [pi-e-ink-daily/Inky-Impression-Frame at master · bablokb/pi-e-ink-daily · GitHub](https://github.com/bablokb/pi-e-ink-daily/tree/master/Inky-Impression-Frame) and be sure to scroll down to skip all the sections about the frame itself (the battery part follows). What I basically use is a LiPo and a boost-converter with an enable pin. The LiPo (an 18650) sits in the bottom of the frame, connected to a TP4046 LiPo charger: ![Lipo+Lader](https://us1.discourse-cdn.com/flex016/uploads/pimoroni/original/2X/0/087a39628938bf632d15a73e83dc58e08f23a46e.jpeg) ---
**Author:** ![ChudChudly](https://avatars.discourse-cdn.com/v4/letter/c/779978/32.png) [@ChudChudly](https://forums.pimoroni.com/u/ChudChudly)\ **Post date:** [December 2, 2025, 12:01am UTC](https://forums.pimoroni.com/t/battery-power-for-pi-zero-2-w-7-3-e-ink-display/28491/3 "2025-12-02T00:01:00Z")
I am doing this with an Inky Impression 7.3” and a Witty Pi L3v7 hat on a Zero 2W. The battery is a 6600mAh from Adafruit. This works great as long as you do the SPI speed fix noted at [Inky Impression 13.3" + Witty Pi + Raspberry Pi Zero W2 not working](https://forums.pimoroni.com/t/inky-impression-13-3-witty-pi-raspberry-pi-zero-w2-not-working/28495) ![1000002311](https://us1.discourse-cdn.com/flex016/uploads/pimoroni/original/2X/7/793ea9e42b8f74b8d9ad711a47f54ca83bb7594b.jpeg) ![1000002309](https://us1.discourse-cdn.com/flex016/uploads/pimoroni/original/2X/e/e872cdc04cbe9471d9ed275a7613480bd38879c4.jpeg) ---
**Author:** ![bablokb](https://avatars.discourse-cdn.com/v4/letter/b/ee59a6/32.png) [@bablokb](https://forums.pimoroni.com/u/bablokb)\ **Post date:** [December 2, 2025, 7:08am UTC](https://forums.pimoroni.com/t/battery-power-for-pi-zero-2-w-7-3-e-ink-display/28491/4 "2025-12-02T07:08:48Z")
Very nice setup, thanks for sharing. The next thing you want to do is optimize uptime. Current draw is mostly dominated by uptime, and you can do a lot to speed up boot-time. I had written an article about what to do. It is more than five years old but most of it is still valid. Back then, I managed to bring down boot times of a Pi-Zero from 30 to 5 seconds. The [article](https://www.raspberry-pi-geek.de/ausgaben/rpg/2020/06/die-boot-zeit-von-raspbian-optimieren/) is in German, but I guess some translation tool will happily swallow it. Anyhow, if you have questions, just ask. ---
**Author:** ![ChudChudly](https://avatars.discourse-cdn.com/v4/letter/c/779978/32.png) [@ChudChudly](https://forums.pimoroni.com/u/ChudChudly)\ **Post date:** [December 2, 2025, 7:32pm UTC](https://forums.pimoroni.com/t/battery-power-for-pi-zero-2-w-7-3-e-ink-display/28491/5 "2025-12-02T19:32:03Z")
Thank you, I’ll give this a read. My current boot time does seem quite long