GlennWest Posted March 9 Report Share Posted March 9 (edited) Edited March 18 by GlennWest Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted March 9 Report Share Posted March 9 Glenn, I actually saw that You Tube video LAST NIGHT !!!!! For sure that Battleborn Battery suffered one catastrophic failure I hope they determine the cause. I thought at one time BB (or some other maker) DID NOT APPROVE SERIES CONNECTIONS and the failure noted did involve a series 48 volt connection of four BB's ????????????? Interesting video for this engineer........ John T Retired but still ever curious EE Quote Link to comment Share on other sites More sharing options...
GlennWest Posted March 9 Author Report Share Posted March 9 I posted due to a few on here using this same battery. Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted March 9 Report Share Posted March 9 (edited) Glenn, yep there are several of those Battle Born units out there. It's strange how ONLY that the third battery in a series string of four used to make up 48 Volts WAS THE MAIN PROBLEM AND FAILED BIG TIME. He indicated THAT BATTERY was reading MUCH HIGHER voltage (wasnt it 17 volts?) then the other three in series that were near 13 volts each. I dont know how THAT battereis BMS allowed such ???????? Hope BB figures it out, I didnt notice it to be any Victron failure ??? Stay tuned John T Edited March 10 by oldjohnt Quote Link to comment Share on other sites More sharing options...
GlennWest Posted March 9 Author Report Share Posted March 9 (edited) The fact that Battleborn is replacing all of them is smart of their part. Edited March 17 by GlennWest Quote Link to comment Share on other sites More sharing options...
palmeris Posted March 9 Report Share Posted March 9 Battle Born does indicate that these packs can be series , not to exceed 48volts, that each pack must be at full state of charge prior to connecting them in series for proper balance , and to disconnect and charge them individually to full SOC annually. His comment that they had been running fine for over a year tends to make me think the maintenance routine wasnt followed. Maybe the cause, maybe not Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted March 9 Report Share Posted March 9 (edited) Yo Glenn, I just watched the video for the second time and according to it there was a Battle Born Battery Failure and he also indicated Battle Born was replacing all eight batteries WOWWWWWWWW talk about good service. QUESTION Does Victron make those batteries for Battle Born ?????? I ask as you speak of Victron batteries and Victron replacing them ?? 2 hours ago, palmeris said: Battle Born does indicate that these packs can be series , not to exceed 48volts, that each pack must be at full state of charge prior to connecting them in series for proper balance , and to disconnect and charge them individually to full SOC annually. His comment that they had been running fine for over a year tends to make me think the maintenance routine wasnt followed. Maybe the cause, maybe not palmeris, Good point and it was ALWAYS that same location (third in series string) where the battery read 17 volts (even with different batteries placed there) yet the other three read 13 volts ????????? Whether or not he failed to follow Battle Borns directions regarding charging balance and annual maintenance I HAVE NO IDEA ?????? I hope Battle Born lets us know. FWIW one pure guess. Regular (NON BMS) batteries in series receive the same charging amps HOWEVER the Battel Borns EACH have an EMS which looks at the terminal voltage and delivers charging amps accordingly, with four in series and each its own BMS perhaps there could be balance problems and why one failed ?????????????????? What say you ?? John T Though long retired still an ever curious engineer and proud of it Edited March 10 by oldjohnt Quote Link to comment Share on other sites More sharing options...
Lou Schneider Posted March 10 Report Share Posted March 10 Too bad the video is now unavailable - someone made it private. Too graphic? Quote Link to comment Share on other sites More sharing options...
GlennWest Posted March 10 Author Report Share Posted March 10 (edited) Nothing grafic about it. Can't find on YouTube now either. Edited March 10 by GlennWest Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted March 10 Report Share Posted March 10 5 hours ago, Lou Schneider said: Too bad the video is now unavailable - someone made it private. Too graphic? Yo Lou, you would have enjoyed it........ I didn't try again today, watched it yesterday and the day before ?????? It didn't look good for BB, maybe there was a complaint ??????? As I posted above it may NOT have been all BB fault however John T Quote Link to comment Share on other sites More sharing options...
palmeris Posted March 15 Report Share Posted March 15 Battle born indicating that multiple units is series must be disconnected and charged individually on an annual basis to balance each pack ...speaks to the fact that there are multiple BMS in the series string with no visibility to what the other packs / bms are doing or need... a multi port charger that can individually monitor and communicate to each BMS or a true 48 volt( or desired voltage) pack with its own BMS monitoring each cell would be another solution, but disconnecting and balance a couple times a year seems a cost effective solution...something to keep in mind when multiple BMS are in series...packs in parallel would be no issue Quote Link to comment Share on other sites More sharing options...
GlennWest Posted March 15 Author Report Share Posted March 15 Better to buy a 48v battery then if this is true Quote Link to comment Share on other sites More sharing options...
palmeris Posted March 17 Report Share Posted March 17 (edited) Or install a battery balancer Edited March 17 by palmeris Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted March 17 Report Share Posted March 17 On 3/15/2023 at 6:57 PM, GlennWest said: Better to buy a 48v battery then if this is true I agree, iffffffffffffffffff your preferred battery manufacturer makes a 48 Volt battery ???? it saves allllllllllllllll those series connections with their potential problems, balance problems, and any in series multiple BMS issues. Now if you have a suitable 48 Volt Inverter/Charger,,,,,,,,,,,,An MPPT 48 volt charger for your solar,,,,,,,,,,,,,A 48 to 12 DC to DC converter for any 12 VDC loads YOURE GOOD TO GO.......... Im NOT a fan of multiple series connections and more than necessary electronic components, but sure higher voltage has its advantages especially for high energy users. To each THEIR own, no necessarily right or wrong answers on this. John T NOT any solar expert NO Warranty lol Quote Link to comment Share on other sites More sharing options...
GlennWest Posted March 17 Author Report Share Posted March 17 (edited) Battle Born doesn't sell 48v batteries. Edited March 18 by GlennWest Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted March 17 Report Share Posted March 17 25 minutes ago, GlennWest said: Victron doesn't sell 48v batteries. If so that doesn't surprise me one bit, I'm not aware of Victron batteries 12 or 48 Volt ??? The ones that failed in the OP were Battleborn not Victron. A quick Google search does make it appear several companies indeed manufacture 48 Volt LiFePo4 batteries, take your pick lol 48 volt lithium iron phosphate battery - Bing images Best wishes to all here John T FREE dry camped near Wildwood Florida, gotta love Solar and Lithium yayyyyyyyyyyy Quote Link to comment Share on other sites More sharing options...
GlennWest Posted March 17 Author Report Share Posted March 17 (edited) Sorry about that. I meant to type Battleborn. I was all connected to Victron and just goofed. Check out Bigbattery.com. Edited March 17 by GlennWest Quote Link to comment Share on other sites More sharing options...
oldjohnt Posted March 18 Report Share Posted March 18 I call those Senior Moments and have them often grrrrrrrrrrr and its gonna get worse DRATS !!!! John T Live in the RV Moochdocked in a friends driveway in Inverness Florida... Happy with my SOK Lithiums working PERFECT so far but believe BB to be good quality Quote Link to comment Share on other sites More sharing options...
Ray,IN Posted March 19 Report Share Posted March 19 (edited) While trying to find that video, I ran across a video of a couple who had a 10 BB battery bank. They switched to Enduro Lithium batteries for several reasons. I found it interesting Enduro makes 12V, 24V, and 36V batteries. Edited March 19 by Ray,IN Quote Link to comment Share on other sites More sharing options...
hemsteadc Posted March 19 Report Share Posted March 19 https://cdn2.hubspot.net/hubfs/441554/lithium-spec-sheets/RB48V100_Spec_Sheet.pdf?t=1495820355718 I have this one. Quote Link to comment Share on other sites More sharing options...
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