- Renogy battery monitor wiring diagram manuals#
- Renogy battery monitor wiring diagram full#
- Renogy battery monitor wiring diagram Bluetooth#
The heater pad I used was the Facon CW-T1218, which is 12″ x 18″ with a 3mm foam pad that covers the heating elements and wiring. Starting with a large 1/4″ thick aluminum plate I added an adhesive heater pad to the underside. The cells are encased in an aluminum shell and should conduct heat fairly well.
Renogy battery monitor wiring diagram Bluetooth#
The Overkill Solar BMS were also extremely easy to connect to over bluetooth on my iPhone and very well built.īuilding the pack to live in an insulated, but unheated garage was the first technical challenge. Well done – you guys delivered some top notch EVE 304Ah LiFePO4 cells with bus bars and nuts, making my life much easier. I called it a night at 2am after powering on the BMS and verifying the cells were balanced and matched as advertised. The same day the cells arrived I stayed up late building the battery bank. Everything arrived without issue, with the cells arriving last on November 9, 2021. The main objective of this chart was to see just what $4300 could get from each of the four options above.Ĭonfident with the decision to build, orders were placed. I assembled one more chart before purchasing the components. The SOK has prismatic cells like the battery bank I built, Renogy uses pouch cells like in cell phones and the new generation of power tool battery packs, and Battle Born uses cylindrical cells like electric cars and has a built in battery warmer for low temperature operation. I also included two other batteries that have competitive technology. SOK was the prime alternative for the stationary battery bank I had in mind. Once I built out the order list I took a moment to look up some alternatives to confirm that building the battery from the cell up was the best choice. Here is the complete parts list for the project.
After some back and forth the Ol’man and I arrived at a plan for battery bank 2.0. Best of all, he listed downloads of the data he pulled from the testing on his website! I love data. Off-Grid Garage on YouTube put together a lovely video with lots of delicious technical details and test results of the exact cells I purchased. I need a moment to give credit where credit is due.
Renogy battery monitor wiring diagram full#
Orders were placed in early October and in one month I had a bench full of components! From there I selected and researched specific components, another 2 hours. This go around I managed the preliminary research and basic design of the pack in about 4 hours. It proved a successful strategy, but wow, was it time consuming.
Renogy battery monitor wiring diagram manuals#
When I started over 12 years ago, I stumbled awkwardly around forums and read manufacturer installation manuals front to back, stopping to research new terms as I encountered them. Channels on Youtube are built around specific disciplines and span from casual to highly technical (yay!). There is a video for everything and a thousand comments for each video. The internet is vastly more powerful at distributing knowledge compared to 12 years ago. The process of adopting a new chemistry required new knowledge. Hello battery bank 2.0! I think it’s fair to say, it is sexy! – aluminum cases, bluetooth, over temperature and under temperature protection, overcurrent protection, thermostatically controlled low temperature warmer, and at less than 1/4 the weight. Goodbye battery bank 1.0 and thank you for 12 years of service. We had maybe 150Ah of capacity before the system was at risk of unexpected shutdown from low voltage when a medium sized appliance requested power. In the last 6-8 months it was abundantly obvious the bank was in a death spiral. Along those same lines, the capacity started to decline slowly, then at year 9-10 it was noticeable. It was a rare event for the first 5-7 years, then started to become twice a year, then finally ending at every 2 months. Over the years the need to water the batteries began to increase. As they charge and discharge, some of the water is lost as hydrogen and oxygen gas (remember the copper passive vent pipe in the battery box – it served us well).
The Ol’man was in charge of watering the batteries. The one advantage we had was a solid maintenance schedule and we used only the top half of the battery capacity, operating between 100% and 50% state of charge (SOC). The cabin had Sam’s Club batteries manufactured by Johnson Controls. The longevity of FLA batteries is commonly accepted as 500 cycles or about 5 years for high quality cells. At the beginning it was capable of 1540Ah at 12V and weighed in at 860 lbs. The original flooded lead acid (FLA) battery bank, made up of 14 golf cart batteries, lasted for 12 years and 500-700 cycles. Today the cabin saw a new battery bank officially enter service! But first, a brief reflection on the first battery bank and its years of reliable service.
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