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add INR18650-35E cell and charger strawman

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sigil-03 2025-08-29 22:40:35 -06:00
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hardware/power.md
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@ -5,6 +5,9 @@
Strawman design proposal: 1S LiPo, 18650 for easy ubiquitous availability
(~3,000 mAh). Add cells in parallel until you get the capacity you want.
## CELLS
[INR18650-35E](https://lygte-info.dk/review/batteries2012/Samsung%20INR18650-35E%203500mAh%20%28Pink%29%20UK.html)
## CHARGERS
1. [5V 2A USB-C](https://www.amazon.com/DWEII-Converter-Step-Up-Charging-Protection/dp/B09YD5C9QC/)
2. [5V 2A](https://www.amazon.com/Ruiwaer-Discharge-Integrated-Adjustable-Charging/dp/B08QHVW5J8)
@ -13,6 +16,7 @@ Strawman design proposal: 1S LiPo, 18650 for easy ubiquitous availability
* combine with [heatsink](https://www.amazon.com/Printer-Heatsink-Thermal-Conductive-Adhesive/dp/B07RKHRHJV)
strawman: charging up to 4v with the INR18650 (see `CELLS:INR18650-35E` for the discharge capacity graph, and `CHARGERS:3` for 4V cutoff w/ a 5V panel) gives us ~3000mAh, or 92% of the battery life.
## BMS
2. [3S 60A](https://www.amazon.com/dp/B0B9MMZWXC)
@ -21,3 +25,4 @@ Strawman design proposal: 1S LiPo, 18650 for easy ubiquitous availability
* mppt charge controllers:
1. <https://www.amazon.com/Waveshare-Solar-Power-Manager-Regulated/dp/B0CT2ZBML9>
2. <https://www.amazon.com/4-4-6-5V-Lithium-Battery-Charger-Controller/dp/B08DY28BXW>