LoneSprinter
Active member
Lithium Battery Management System shutting down due to high inrush currents...anyone else experiencing this issue?
I'm converting a 2016 Sprinter into an RV. I purchased 2 Battleborn Li 100AHr batteries connected in series. I also purchased an AIMs 24V, 2KW, Low frequency inverter/charger. What I'm experiencing is a shut down of the Li battery's Battery Management System (BMS) with the initial start-up (closing of a battery isolation switch in the battery bank's negative lead) connected to the inverter, or any time the inverter is disconnected for any length of time (several hours or overnight) the inverters internal capacitors discharge. Cycling the battery isolation switch brings the BMS/batteries back online, but nothing works until the switch is cycled. AIMs confessed the inrush current to charge the capacitors in the inverter draws +500A and the standby current draw for the inverter not even being turned on is significant enough to warrant turning it off when no AC power is being used. Battleborn tells me the BMS shuts down at 700A. I'm being told by all involved what I'm experiencing is rare. It should only be occurring on inverters rated for 4KW or above where a Current Surge Limiter (CSL) is used to limit the inrush current a major additional expense expense, if it even works on for this small of an inverter...Battleborn was nice enough to send me one to try before I buy because they're not certain it's going to work. I doubt this issue is rare. As I'm building this van inside a garage connected to my home I open the battery isolation switch whenever I'm not working on the van to limit the possibility of any fire risk.
I'm wondering if anyone else using Li batteries is having issues with the BMS and their inverters...either low frequency or high frequency inverters?
AIMs has suggested an incandescent light bulb and switch to bypass the battery isolation switch in order to pre-charge the inverters capacitors. I haven't tried this yet but will shortly. Anyone else have any other "brilliant" solutions to this issue? I actually think the bulb might work for me.
Anyone considering Li batteries to swap out for any other battery technology needs to know absolutely everything about their coaches electrical system and any connected components before attempting this. While researching Li batteries a number of suppliers stated things like direct replacement, but don't believe it. Don't get me wrong, I think Li batteries are the future, it's just right now you have to be very careful because a lot of suppliers just don't have the experience with the Li battery technology and nobody wants to loose a sale...caveat emptor!
I'm converting a 2016 Sprinter into an RV. I purchased 2 Battleborn Li 100AHr batteries connected in series. I also purchased an AIMs 24V, 2KW, Low frequency inverter/charger. What I'm experiencing is a shut down of the Li battery's Battery Management System (BMS) with the initial start-up (closing of a battery isolation switch in the battery bank's negative lead) connected to the inverter, or any time the inverter is disconnected for any length of time (several hours or overnight) the inverters internal capacitors discharge. Cycling the battery isolation switch brings the BMS/batteries back online, but nothing works until the switch is cycled. AIMs confessed the inrush current to charge the capacitors in the inverter draws +500A and the standby current draw for the inverter not even being turned on is significant enough to warrant turning it off when no AC power is being used. Battleborn tells me the BMS shuts down at 700A. I'm being told by all involved what I'm experiencing is rare. It should only be occurring on inverters rated for 4KW or above where a Current Surge Limiter (CSL) is used to limit the inrush current a major additional expense expense, if it even works on for this small of an inverter...Battleborn was nice enough to send me one to try before I buy because they're not certain it's going to work. I doubt this issue is rare. As I'm building this van inside a garage connected to my home I open the battery isolation switch whenever I'm not working on the van to limit the possibility of any fire risk.
I'm wondering if anyone else using Li batteries is having issues with the BMS and their inverters...either low frequency or high frequency inverters?
AIMs has suggested an incandescent light bulb and switch to bypass the battery isolation switch in order to pre-charge the inverters capacitors. I haven't tried this yet but will shortly. Anyone else have any other "brilliant" solutions to this issue? I actually think the bulb might work for me.
Anyone considering Li batteries to swap out for any other battery technology needs to know absolutely everything about their coaches electrical system and any connected components before attempting this. While researching Li batteries a number of suppliers stated things like direct replacement, but don't believe it. Don't get me wrong, I think Li batteries are the future, it's just right now you have to be very careful because a lot of suppliers just don't have the experience with the Li battery technology and nobody wants to loose a sale...caveat emptor!