Most reacted threads

Hi all! I just ordered 8pcs LiFePO4 Cells 3.2v 200ah from RJ Energy to build my own 24V200Ah battery, but they didn't have a BMS with Bluetooth in stock. Can anyone recommend a good BMS with Bluetooth and low temp cut off?

Hey! Lots of great threads on the subject of open-circuit voltage, but haven't found exactly what I am looking for. I have a 24 voltage system. I am thinking about expanding my PV array and I am looking at two 345W panels with 41 Voc. I'm told that I should add 15% to the Voc because the...

Hi! Sorry if this has been answered before. I have 4x255 2S2P solar panels and I am thinking about expanding with another string of solar panels in parallel with the others. The other identical string will have another location and will have shade when the other string is producing at maximum...

Hi! I have 4 panels of about 500w operating at about 64V. I have two more small panels just lying around and I am thinking about mounting them in a western direction to get the morning sun, the others are mounted in a southern direction. The small panels are 125W 16V. I am thinking about...

Hey! I'm getting conflicting feedback regarding the Daly BMS with Bluetooth. One sales rep told me that I can control the BMS with a laptop via a UART-cable, but another sales rep told me that I will ONLY be able to control the BMS through Bluetooth and the Chinese WeChat-app. And the big...

I need a Daly 24v 8s (100-200Ah). Cant find any sellers online. Currently not available at Amazon. Does anybody know about anyone who has the Daly BMS in stock?

I have 16 cells 3.2V 202Ah in an 8S2p setup. The charge speed is 1C and the discharge is 2C. With how many Ah can I charge and discharge?

I have a Voltronic 24V 2400W all-in-one inverter and a 1Kw solar array. According to the manual, it can handle 1Kw of solar power. I called the dealer and asked about what would happen if I oversized my solar array and if this could damage my inverter. He told me putting more than 1Kw into the...

I'm top balancing 8 brand new 3,2V 202Ah cells with a Longwei power supply. I have set the voltage for the time being to 3,5. But have a couple of questions. 1. When the charging starts, the voltage on the power supply dropped to 3,40. But the voltage on the cells is about 3,1. Should they not...

I have 8x3,2V LifePo4 202Ah cells in a 24V configuration and an Overkill BMS. I'm planning to buy 8 new cells and expanding from 8 to 16. My "old" cells are under a year old with few cycles. As I understand it I have two options. either 8 cells in parallel with 8 others. But then I will need 2...

I just installed the Daly BMS and I get 26.0V when I measure the positive and the P-, but when I measure the positive and the B- I get 26.4V. Shouldn't they be the same? (all 8 cells are 3.30V)

Hey! I just ordered this power supply to top balance my battery cells: https://www.amazon.com/gp/product/B07ML2MP9Q I understand it is recommended to use thicker leads. How do I make new leads? Or can I buy thicker leads?

I have a 1 Kw Honda gas generator, but when I connect it to my charger, the input is around 200 watts. I have an all-in-one inverter/charger/MPPT. I have tried different settings on my inverter, usually the bulk to 28,0 - 28,4 and float between 27,0 - 28,0. I have tried all sorts of...

I'm having trouble with my lifepo4 battery (waiting for new BMS) and decided to build a 24v battery from some old 12v batteries I have laying around from the pre-lifepo4 days. I used this diagram to connect 4x12v 100Ah batteries to what should be a 24v 200Ah battery, but sparks and smoke flew...

My bms needs replacement. Can I use my lifepo4 battery without a bms while I wait for a new? My invterter has ofourse low and high voltage cutoff, but only for the 24v battery bank, not for each cell. The battery consist of 8x3,2v battery cells. Pleasen help.

I have 8 x 220Ah LiFePo4 cells and I use the Overkill BMS. I can charge the pack to 28.0V before one of the cells peak at my 3,63 limit and the charging stops. Attached are 2 screenshots from the xiaoxiang-app. 1. Are these cells balanced? 2. How long many hours will it take to top balance...

I am looking at this inverter I am thinking of buying and its "MPPT Range @ Operating Voltage" is 120 - 450V. https://www.alibaba.com/product-detail/Newest-Axpert-vmlll-Bluetooth-240V-Dc_62380190594.html?spm=a2700.12243863.0.0.38403e5fcrYGfL I'm going to put 5 solar panels in series and they...