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I recall when back when I bough a Lithium battery that it came with one of these PZEM-015 battery monitors, if my memory serves me right the "Capacity Ah" went up when charging and down when dis-charging thus giving an indication of the number of Ah left in the battery. The battery monitor...

Can anyone tell me where to connect this cable to, connection block highlighted in red ?

Had an off-grid system for several years now with no connection to the grid. As of 10th January the inverter ( a Sorotec REVO VM II ) no longer shows the PV Voltage / Amps / Input on its display yet it continues to charge the battery although to a lesser extent about 60% of normal. The PV...

I am aware that multiple Victron MPPT solar charge controlleres can be connected ( in parallel ) to the same battery bank. I approached a budget manufacturer POWMr and asked them if multiples of their MPPT charge controllers can be connected to the same battery bank and they replied "Parallel...

I have 2x 48v 10kw lifpo4 batteries, coming back from 2 months away, I found that all of the cells from one of the batteris have swollen and not by a little bit. Looking at the logs it appears the mppt charger at one stage was charging 62v and then died, why the BMS did not intervene ? I have...

I have a 48v 10kw LiFePo4 battery, I want to add another 20kw, am I better to add 2x 10kw batteries or am I ok to add 1x 20kw battery ? The reason I ask is that manufacturers move on in producing larger battery cells, I bought these 200ah cells a year a go and now they say they don't sell them...

I am finding that the passive balancer in the BMS is draining of overly charged cells, and this cell drainage is not being fed back into the shunt, therefore the shut gives every increasing battery amp hours with each charge. Anyone else come across this, any workaround ?

My boats DC electrical is 24V nominal and I'm planning to install a 40kWh battery bank. The battery supplier ( China black box with built in BMS ) has dis-couraged me from connecting any more than 2 batteries in parallel. I have been using their batteries ( 2 in parallel ) for years in my land...

I've installed my off-grid home solar system using strings upto 450VDC. My next project to is to install a solar system on my catamaran, however I am meeting some resistance ( forgive the pun ) regarding the use of strings and high voltage DC on a boat.... apparantely on boats they opt to...

Follow two layouts for solar panels, I have attempted to demonstrate the shading when the boom is on the left and when the boom is on the right side. I am uncertain of the best possible configuration in terms of strings and parallel. I have 4 mppt charge controllers, more can be add more if...

At home I am off-grid and have several 48V inverters operating in parallel. My Lagoon 560 ( which sang so I am having to replace everything ), I am replacing the deisel generator with inverters operating in parallel.... the existing DC equipment is 24V however my preference and experience is...

The boat will use a 48V battery to power the Inverter, however the Winches & Windlass operate on 24V, so I can see 2 possible solutions : 1. install a 24V battery and a 48V battery 2. install a 48V battery and 48V-24V step-down DC-DC converter I am uncertain which way to go and welcome...

LiFePo4 3.2v cells I currently have 32x 100Ah cells in 2p 16s configuration like this If 300Ah cells are added to the existing 100Ah cells, like this does any foresee a problem ?

EASUN iSolar SMR II Inverter 5.5KW ( SOROTEC / REVO-WM II 5.5KW ) I keep blowing up inverters when connecting them to a generator.... I am off-grid... when the inverters are running off batteries and solar panels they are fine, but after 3 or 4 days of rain the batteries are empty. So I...

hypothetical situation... there is 1x 100ah battery and 1x 200ah battery wired in parallel and the load is 30amps, will the batteries provide 15amps each or the 100ah battery provide 10amps and the 200ah battery 20amps ? I think the latter but would like to check.

Newly purcahsed MCCB 125A DC Breaker has "Line" & "Load" connections. I am using combined inverter / MPPT charger. I have assumed that the "Load" should be connect to my inverter and the "Line" to my battery, however I have checked online and one photo shows the "Line" being connected to the...

Two inverters connected in parallel, one inverter gives the error code 19 - firmware inconsistent... I have looked around but as yet have been unable to find the firmware and update tool for this model of inverter. Easun after-sales services has been unavailable for the last days. Thank you in...

Is there anything wrong with wiring a 48v (16s) battery used in a 48v system ( 48v inverter / mppt charge ) to a 24v busbar... ie. connecting the negative of the 1st cell and the positive of the 8th cell to the 24v busbar, and again the negative of the 9th cell and the positive of the 16th...

I've been looking around for a FET based BMS solution to monitor parallel packs and has WiFi connectivity or can be connect to an Android Device / Raspberry Pi ( via USB ). So far I've come across 1. Seplos BMS but appears that it can only be connected to PC and 2. Batrium but this is not FET...

I am familiar wtih and able to source easily inverters and mppt charge controller eqiupment for a 48VDC battery bank. However I am currently scanning the internet trying source an inverter and mppt charge controller to work with a 400VDC battery bank but not having much luck.... I know this...

I've 2 5kw inverters and 2 batteries ( 48v 200ah each ) The inverter manuafacturer says the inverters can run in parallel mode with either one battery each or a single battery ( linking the batteries in parallel ) My preference is to run the batteries in parallel to ensure each battery is...

I installed my off-grid residential solar system. Battery, inverter & charger are all on 48VDC so pretty straight forward. I'm currently working on installing an electric propulsion system on a boat, basically the residential loads are similar + there is the additional load the electric...

I am looking at installing solar setup for the 240V AC circuit, it uses a 48V DC inverter / battery. The boat has an existing 24V DC circuit for the starter motor, windlass, winches and alternator. Having a 24V and 48V requires two battery banks, I'm considering dispensing with the 24V battery...