A shame shipping to NL is 10x the price of a cell. Even if those cells are just 6Ah I wouldn’t mind a couple of them… But at > 40 euros shipping…
1 Like
Just do some searching:
https://www.aliexpress.com/item/32989874258.html
https://www.aliexpress.com/item/32911362460.html
https://www.aliexpress.com/item/33000037640.html
https://www.aliexpress.com/item/33000896688.html
AliExpress, so authenticity cannot be garanteed.
1 Like
And today’s lesson is “IEEE 802.15.4-2006 wireless mesh networks”…
Pycom devices arranging themselves as (one) Parent and two Child devices as indicated by the neopixel colour. Lots to learn and no connection beyond these three devices. IPV6 next…
2 Likes
0.79 A with NO LOAD attached… 
1 Like
1 Like
THose where the days. 
Although I hated the ABC keyboard.
1 Like
summertime … and still waiting for parts, most projects have holidays 
- update… copper strips (busbars) arrived
I want to measure each cell wireless in the future as an experiment
-
https://circuitdigest.com/microcontroller-projects/multi-cell-voltage-monitoring-for-lithium-battery-pack-in-electric-vehicles
something like this … combined with a node
1 Like
Aye, how I remember the ‘buffer overflows’ and ‘program alarms’ suffered by the Apollo primary guidance navigation and control system in 1969.
I bet Bill Gates was listening and that is where he got the idea for Windows from.
3 Likes
I am looking for a simple and cheap solution for LiFePO4 single cell discharge protection.
I already checked the following modules but these either do not support LiFePO4 or do not provide discharge protection:
- TP4056 modules combine charging with discharge protection but suitable for Li-ion/LiPo only.
- TP5000 modules support LiFePO4 charging but lack discharge protection.
Any ideas?
present for a friend oops… wrong adapter 
and because I’m sure he’ll ask me to program the thing (PMR channels) I charge it for now with a lab power supply, it will be a ‘base’ station in his camper the next 6 months.
*removed link - sold out
hmm… online vs reality
nope… I guess this won’t elevate my solarpanel 
1 Like
Thanks. That one is rather large.
Looking for something suitable for 300 to 500 mA max (1A at most) for use in nodes and preferably low-power friendly.
elevating the cover of your control-panel cover i think
1 Like
never seen them below 1 A … maybe you can ‘edit’ one single BMS board… change a resistor to lower a setting ? or use a simple fuse 
Eh… fuse as discharge protection when battery voltage reaches a low threshold?