Sc00bs Posted May 7, 2022 Share Posted May 7, 2022 Hi Guys Does anyone have BSL battery compatibility list that shows what batteries can be mixed in a battery bank? I believe that not all the batteries have compatible BMS's & Cell chemistries and would like to know what batteries are compatible with my existing BSL Batteries and would still communicate with my Sunsynk Inverter. @BSLBATT Maybe? I have B-LFP51.2V 120Ah Batteries Quote Link to comment Share on other sites More sharing options...
Kilowatt Power Posted September 26, 2022 Share Posted September 26, 2022 Following... I too have BSLBATT B-LFP48-120E (51.2Vdc, 6.14kWh, 120Ah) LFP batteries and would like to increase the installed capacity. Quote Link to comment Share on other sites More sharing options...
Beat Posted September 26, 2022 Share Posted September 26, 2022 On 2022/05/07 at 8:43 PM, Sc00bs said: I believe that not all the batteries have compatible BMS's & Cell chemistries First and sin equa non condition to parallel battery packs is that they consist of the same chemistry and the same number of cells. If the BMS are not compatible, just let them alone and monitor them individually. zsde 1 Quote Link to comment Share on other sites More sharing options...
BritishRacingGreen Posted September 26, 2022 Share Posted September 26, 2022 20 minutes ago, Beat said: First and sin equa non condition to parallel battery packs is that they consist of the same chemistry and the same number of cells. If the BMS are not compatible, just let them alone and monitor them individually. Case in point : @Steve87 is currently pairing a Livoltek 5.5Kw with DIY blue cell pack. Both LifePo4. Both 16S. According to hime all is gold. zsde and Kilowatt Power 2 Quote Link to comment Share on other sites More sharing options...
Kilowatt Power Posted September 26, 2022 Share Posted September 26, 2022 @BSLBATT, is it possible to parallel BSL B-LFP48-125E (51.2Vdc, 6.4kWh, 125Ah) and B-LFP48-135E (51.2Vdc, 6.9kWh, 135Ah)? Quote Link to comment Share on other sites More sharing options...
Beat Posted September 26, 2022 Share Posted September 26, 2022 17 minutes ago, Kilowatt Power said: @BSLBATT, is it possible to parallel BSL B-LFP48-125E (51.2Vdc, 6.4kWh, 125Ah) and B-LFP48-135E (51.2Vdc, 6.9kWh, 135Ah)? I think so. Quote Link to comment Share on other sites More sharing options...
Leshen Posted September 26, 2022 Share Posted September 26, 2022 2 hours ago, Kilowatt Power said: @BSLBATT, is it possible to parallel BSL B-LFP48-125E (51.2Vdc, 6.4kWh, 125Ah) and B-LFP48-135E (51.2Vdc, 6.9kWh, 135Ah)? Yes it’s possible. Just make the 6.4 the master. Kilowatt Power and P1000 2 Quote Link to comment Share on other sites More sharing options...
P1000 Posted September 27, 2022 Share Posted September 27, 2022 15 hours ago, Leshen said: Yes it’s possible. Just make the 6.4 the master. Out of interest, why does the 6.4 have to be master? Does it then report 2x6.4kWh instead of 2x6.9kWh? Quote Link to comment Share on other sites More sharing options...
Leshen Posted September 27, 2022 Share Posted September 27, 2022 3 hours ago, P1000 said: Out of interest, why does the 6.4 have to be master? Does it then report 2x6.4kWh instead of 2x6.9kWh? It will still have the combined capacity. The inverter will use the lower charge and discharge rate from the smaller battery. Steve87 and P1000 2 Quote Link to comment Share on other sites More sharing options...
Kilowatt Power Posted September 27, 2022 Share Posted September 27, 2022 On 2022/09/26 at 6:12 PM, Leshen said: Yes it’s possible. Just make the 6.4 the master. Thank you @Leshen. I take it that you have already tried this out. Quote Link to comment Share on other sites More sharing options...
Steve87 Posted September 27, 2022 Share Posted September 27, 2022 Great to see that loadshedding & Equipment availability or lack thereof is making ppl think Remember, a lithium battery is still just a battery. It will be forever a battery until you abuse it, then it becomes a battery with a babysitter. Provided you pay attention to how you connect them to each other ie. Wire lengths equal into the DC bus or Isolator, that Lithium battery will share it's current accordingly & behave like a battery. As @BritishRacingGreenmentioned above, I have a 6 kWh LFP DiY pack with a Daly BMS in parallel with a 5kWh Livoltek lithium battery. They are running very smoothly together. Jacques Ester and Kilowatt Power 2 Quote Link to comment Share on other sites More sharing options...
Leshen Posted September 28, 2022 Share Posted September 28, 2022 9 hours ago, Kilowatt Power said: Thank you @Leshen. I take it that you have already tried this out. This is the instruction from the supplier Kilowatt Power 1 Quote Link to comment Share on other sites More sharing options...
BSLBATT Posted October 10, 2022 Share Posted October 10, 2022 Yes they will comm together Kilowatt Power 1 Quote Link to comment Share on other sites More sharing options...
Sc00bs Posted April 3, 2023 Author Share Posted April 3, 2023 So my understanding after asking around is that the 5kw, 6.4kw & 7kw BSL batteries BMS are all compatible and are happy to live in a bank together and the BMS's will all communicate. I recently added and extra 2 x 6.4kw BSL batteries onto my existing bank of 2 x 6.4's and it was relatively painless and easy to do. The GetOffGrid guys also updated my existing batteries BMS's firmware for me and checked everything out, The 8.8kw, Powerwall & 15kw apparently use a different BMS which does NOT communicate with the previously mentioned 5, 6.4 & 7kw models. I am not sure what the interoperability is like between the 8.8, Powerwall & 15kw models, maybe @BSLBATT can comment? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.