# DIYBMS v4 **URL:** \ **Category:** diyBMS\ **Tags:** bms, diybms, battery\ **Created:** [30 June 2019 09:06 UTC](https://community.openenergymonitor.org/t/diybms-v4/11292 "2019-06-30T09:06:01Z")\ **Posts on this page:** 1\ **Showing post:** 4789
**Author:** ![fhorst1](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/fhorst1/32/15832_2.png) [@fhorst1](https://community.openenergymonitor.org/u/fhorst1)\ **Post date:** [25 July 2022 08:31 UTC](https://community.openenergymonitor.org/t/diybms-v4/11292/4789 "2022-07-25T08:31:31Z")
Hey guys, I’m selling off my DIY BMS stuff. While I totally like this project, I just am not able to finish my build. 4x JKong BMS are now doing my batteries for over 1.5 years, its time to abandon this project for me. I used to have a setup prepared for 80 cells…, 5 x 16 280AH Eve cells. Life happened, now 3 x prebuild BYD 260Ah each and one DIY 280 Eve. Running stable for a long long time… Never change a winning team:-) Anyways… My hoarding collection is roughly this: 33 x 4.0 boards, the heatsink you see is with thermal tape [4.0 boards](https://ibb.co/CnTrnFq) 30 x finished 4.40 boards. Heatsink is fixed with thermal epoxy (on 17) [4.40 board pic1](https://ibb.co/CQjWBTC) [4.40 board pic2](https://ibb.co/BTf7f9P) [picture of 16 with heatsink](https://ibb.co/CnTrnFq) 20 x not yet finished 4.40 boards, all parts included. [20 4.40 boards new, incl. parts.](https://ibb.co/41QxN8p) [second picture](https://ibb.co/bWCq2cT) 6 controller boards, not yet finished (all parts included) [controller boards](https://ibb.co/q000N7T) 5 x new controller boards not finished, one with display, for 3x all parts included [new controller boards](https://ibb.co/PtBDvk3) [display](https://ibb.co/zScD5hR) [6 x ESP8266](https://ibb.co/jDqCNB8) [Relay boards](https://ibb.co/09xF1DX) I have 25x attiny, 20 to be used for the not yet populated boards. Possibly Ebay is a better place to sell. Attiny goes for € 10 there (UK) ( € 2.50 poland) That is not where the enthusiasts are 🙂 This community has given me a lot, I like to give back. I’m not giving away for free… absolutely not. You also don’t have to expect to pay 10 bucks for attiny 🙂 Just send me a message via OEM forum if you are interested to buy. --- _[View the full topic](https://community.openenergymonitor.org/t/diybms-v4/11292)._