All about battery management systems - from single board systems for LiFePo4 to the fully configurable ElectroDacus SBMS4080 Solar BMS. And news of the KickStarter launch of the new ElectroDacus SBMS100.
https://www.kickstarter.com/projects/electrodacus/120a-solar-bms-charger-lifepo4li-ion-offgridrv-wit
https://www.kickstarter.com/projects/electrodacus/120a-solar-bms-charger-lifepo4li-ion-offgridrv-wit
Have a Happy New Year Julian. Have a Ebike here was thinking lithium iron batteries as I have 100s of them. But may chamge batteries.
Hello Julian,
I would private message you, but I think others may be able to benefit from my question.
Could you direct me to a reliable, inexpensive BMS? Or a company that sells good ones? I am building an electric bicycle battery that will have 20 li ion 18650 cells in series, so I would need a 72V, 30A BMS.
Thank you!
Paul
Are there no BMS PCBs out yet that aren't cheap ones from eBay for LifePO4 batteries? I wanted one for my project but they use the wrong low voltage and over voltage levels.
have you tested the electrodacus yet as im really interested to see if this will work with 18650 and solar panels
I've seen at least one post online where someone is using a 4cell BMS with 4×4 18650's in parallel. I would have thought this would be detrimental to the feedback sensing of the current and would over charge the batteries? what are the effects of adding batteries in parallel to a BMS and what if you don't add the amount of cells the board is designed for?
The ability to adjust the voltage sensing levels seems like a case of replacing the resistors on a battery management board with some variable pots. perhaps you could do a "deep dive" on a small 3 cell board to see how easy it is?
I would love to have some of the big yellow lifepo4 batteries but you can't get them in the UK.
 thanks aboute your information about BMS ,
best regard
Those lifespan figures seem impressive for LiPo's and on the face ov it better value over their lifespan. However, one thing is that it is fairly easy to obtain second hand lead acid batteries in very good condition for a fraction ov the new price. Sometimes not much more than the scrap value. I have never yet seen any kind ov large lithium anything batteries offered in this way. As for the charging/discharging efficiency…well solar panels are pretty cheap nowadays. And during the day with a large array you're running many loads essentially direct from the panel's current anyway.
Any chance you might do a "solar energy primer" video covering top-level concepts, battery types, solar cell types, latest technologies available to DIY, the purpose of BMSs, an idea of what's possible with solar energy in the home, and approx project costs and pointers to get started in the world of solar?
Big request I know. There seem to be so many areas of solar energy I don't understand so this would be amazing to start the process of demystifying it all!
Where would the best place to find a cheap 10w led driver. I ask because I bought an led flood light recently and accidently fried the driver/converter so I'm trying to replace that.
I know it's going off at a tangent but this video reminded me about your pwm solar charge controller which reminded me about the series you were thinking of making about it, from conception through to production and all of the challenges in between. IMHO I think it would be well worth tuning in for.
+UroĹĄ Golob sorry there is no replay button to your comment you need to change the google+ settings.
That Atmel IC looks great similar to what Linear technology has but the ISL94203 that I use is even more integrated and with more functionalities and is not SW dependent it dose all protection in HW
he's spamming everywhere with this kickstarter controller, and it didnt do mppt last time i looked…
I once developed 72cell bms for electric sports car using atmels ATA6870N, pretty amazing chip if you ask me.Â
hey julian, tbh i was abit disappointed when i saw this video because it was only a teaser like movie with theory info only,
it would be nice to see a video with actual measurements/comparisons of this bords (like you usually do) so we could see how good they are for protecting/ballancing. also i was wondering about how good a bord without a MPU would work
(old school electronics VS digital MPU)
cant wait for the spring to come as im sure you will test the s**t out of them bords, like only you can do so good!
thanks.