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I have a new to me 40ft motorhome and want to add solar and LFP. The RV has 6 new 6v lead acid batteries for the house I have 12 CALB 180ah LFP batteries I can configure as 3p4s from another project The RV has a integrated power management system, 12v/2000w Magnum inverter and 7.5kw generator...

Looking for a device to disconnect my LifePo4 battery bank at a configurable voltage as a safety net to my BMS. My boat has an xantrex 2012 so I can not use a Victron Battery Protect. Power can come from alternator, SCC, or the inverter charger. Having just read about a failed SSC that over...

I have a new in box Chargery BMS 8T with 300amp shunt. Never out of the box. $90.00 Shipped

Looking for recommendations for cell configuration for my trawler. I prefer the square format however the rectangle seem to provide better connections between the cells. I already own these CALB cells -180ah batteries 3p4s configuration (entire boat is 12v). Any suggestions?

Please give this design a review for any mistakes / issues. I have 12 CALB cells (3p4s) to add to my existing FLA cells. Quoted from www.zwerfcat.nl While discharging, the lithium batteries stay above 13.0 Volt until they are almost empty. The lithium voltage is higher than the voltage of a...

I Just purchased a boat that has a 2 year old FLA / Solar / Inverter system nicely configured. Previously I had purchased 12 180ah CALB cells for my previous boat that I would like to add to the new boats existing system. I read the article below and really like the idea of the Hybrid system –...

Has anyone heard of or has experience with this HybridBMS https://www.zwerfcat.nl/en/open-hybrid-bms.html He really seems to have a solution for marine / RV mixed systems (lead acid and Lifepo4). I like the approach - will it work ? https://www.zwerfcat.nl/en/lithium-implementations.html...

Hoping someone can review and point out any weaknesses in this design for my boat refit. I am keeping the starting system separate from the house batteries. At some time in the future I may add a B2B charger if it's needed. Looking to be able to discharge up to 2000 watts - most loads will be...

Has anyone considered using micro inverters to take solar AC voltage to an inverter / charger instead of using a SCC? A friend asked me if this could be done, and I dont know why it could / should not be done.

Does anyone know of an inverter that will boost the generator power if demand rises above the generators abilities. I would like to run an AC unit on a small generator, but need a boost when the AC starts. I know of the soft-starts however I still need some additional boost from the...

I started to assemble my 3p4s battey and really did not like how the busbar design layed out. I started thinking and came up with this idea. This design is for CALB 180ah batteries but I can alter it for any battery bank. I'm going to talk to a fabricator on Monday, is anyone interested in...

Does anyone have suggestions for disconnecting LiFePO4 batteries / solar for an extended period of time (1-3 months). I know LiFePO4 batteries should be stored at about 50% charge when not in use, I can put a load on them to obtain this SOC prior to shutdown. Disconnecting solar and batteries...

I'm looking for a BMS for a new system on my boat. Has anyone used the Victron BMS 12/200 on a boat or a motor home ? Price seems fair for this unit at $238. Specs look interesting, and it will even tie in the alternator to allow charging if I am reading this correctly. My system will...

Please help, looking for advice on which cells to use on our 35ft trawler. 180ah CALB cells are a lot more expensive but seem to be much more robust, with higher charge / discharge rates 280ah EVE cells are much cheaper, smaller and lighter (weight is not important) System will be 360ah plus...

Doing some research I came across a comment that LifePo4 batteries should not be stored at 100% charge, but instead at about 40-60%. So while at dock or in storage what do we do? If this is the case, how can we accomplish this with standard chargers? How do we account for the BMS draw over...

Help please! I'm looking for an inexpensive inverter with adjustable low voltage cutoff. Does anyone know of one? Needed for testing batteries 12v to 120v ac - 1000w minimum Thanks

Has anyone looked at this mfg? and this format ?

Has anyone installed / used on of these BMS systems. They seem to do everything that we are looking for. I havent found any prices yet though. The system can monitor individual cells, the entire pack, auto disconnect a battery system, balance cells etc. Any information would be helpfull...

does anyone know if the ISDT BattGo BG-8S Battery Meter can be used to monitor entire battery banks or just cells I have 8 * 12v valence batteries and would like to monitor each battery. Can the display show 12.xxx or just 3.xxx. I do not need to use this unit to balance the cells

ok, I'm new to solar and wondering if someone could give me some realistic estimations on what to expect for watt hours per day might be. Lets use a single 300w solar cell, mounted horizontally with no shadows (it's a power boat and I'm considering 3 total panels, but let's use one for now)...

This thread will be used to advise others of potential suppliers of Lifepo4 batteries. Please use other threads to discuss individual suppliers and product reviews. Keep the following format. You can cut and paste the template below into your post. I will distill the information provided and...

Looking for the best option for our 35 ft trawler. We currently have a MS2812 inverter / charger and aged golf cart batteries. Looking to add 3 300w solar panels and replace the lead acid with lithium Lifepo4. looking at the odd configuration of the Leaf batteries, Can these be used for 12v...

Newbe asking if any know if there is a major benefit to Prismatic cells vs a cluster of 18650. If the choice is Prismatic, for a 12v system is it better to get 4 large cells or parallel 8 or 12 cells?

I am looking to add a solar system to augment our existing power systems. Goal is to provide power to an apartment sized refrigerator and maybe some additional charging of the batteries. Since we already have a magnum 2812 inverter we do not need to create 120v ac with the new system. We will...