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Hello I just saw a few YouTube videos about dc circuit breakers going up in flames because of wrong wiring etc.. We use following breaker between our 200Ah 48V Lifepo4 battery and 5kw inverter. It's mainly used to isolate the battery during maintenance work. DC MCB 24V 48V 96V DZ47 circuit...

Greetings I plan to build a DIY pico hydroelectric generator to charge a 12V Lifepo4 battery. The target output is just 5W! Why because running the turbine for even just 12hours a day would generate 60Wh per day which is plenty to power led lights, charge a phone a few times, etc.. Also...

*Edited, inserted instructions how to solve the SOC issue. All this here is based on WingNut's post here https://diysolarforum.com/threads/xiaoxiang-bms-spontaneously-resets-remaining-capacity-display.22472/post-295322 Greetings to all JBD BMS owners! Did you also notice that the SOC % value...

Hello DIYer Have you also experienced that your non-smart cheap active balancer (example picture attached) causes your painstakingly top-balanced battery to loose its top-balance over time!? After some research i noticed that so many others experienced this annoyance as well. Unfortunately i...

Hello I need your help! I am looking for a way to remotely switch ON/OFF one of my two PV strings which has Low Insulation Resistance faults (because a string with old degraded panels) whenever it gets wet. If the inverter detects this issue it shuts down the whole production. So in order not...

THE ART OF 10% TO 90% ☀ Sunny hello to everyone ☀ Would be nice and useful if we could collect some methods how to keep ones cells within 10 - 90% SoC. Since application, circumstances and understanding differs, methods differ. I start things up, I am going to share my method and journey to...

New post: Warning: This cheap charge controller feeds back over 90V to solar input after charge stop. This high volt feedback voltage destroyed one of my bench power supplies. I guess after charge stop the capacitors inside discharge!? Neither the battery (used a 12 volt one) nor my now...

Sunny greetings to everyone! We use here an Must Ph18 5048 pluh 5Kw hybrid inverter. 4.5kw solar array. 100A 48v battery. The idea was to reduce the electricity bill but we wondered why it doesn't make a big difference? We actually don't intend to pump anything into the grid (since we don't...

Warm greetings I have not much experience nor knowledge about electronics so that's why I need and ask for some guidance and help from those who do! There are three common manual- or fixed mpp modules available for purchase. sd30crma, CN3767, BQ24650. Problem with those is they are quite...

I just finished my first test power box build, that's the result. Medicine box 2p4s 32650 5ah lifepo4 10a daly bms 1.5a active balancer 2p mppSET 1a charge controllers Electric Energy Tester Rocket Switch 20w solar panel If anyone has some suggestions, recommendation, sees some dangers...

Hello Parts list: 23v 20w solar panel, 6ah 12.8v lifepo4, 2x sd30crma mppSET (mpp factory fixed at 17.5v) charge modules. The mppSET modules have an 1A current output limitation. For testing purposes I attached a real mppt charge controller to the 20w panel and the ammeter showed 17.11w flow...

Hello to everyone! I am a total newbie to lifepo4 batteries so I need some clarification. I read many posts on this forum and beyond but I am still a bit confused and uncertain about the ideal charging parameters for my setup. I have following solar setup: 23.6V 20.7W poly solar panel, Mppt...

Hello to everyone! I am a total newbie to lifepo4 batteries. I read quite a bit on this forum and beyond but I am still a bit uncertain... I got following small solar setup: 23.6V 20.7W poly solar panel, Mppt charge module SD30CRMA-18V (I've tested 92% efficiency with 1A max charge current...