my To be setup system will be .
2* SEPLOS Mason 48V DIY
2 * 48V 200A 16S Seplos BMS
2 * 58V 400A Fuse internal
all of above is part of the internal "selplos" system, all within the unit.
arrived Feb 2026
Built and working fine ~ some learning but all done in 12hr for both.
All disconnected and powered off until DNO approval and my logic for setup correct
So this is a 48v 200A
2* SEPLOS Mason 48V DIY
2 * 48V 200A 16S Seplos BMS
2 * 58V 400A Fuse internal
all of above is part of the internal "selplos" system, all within the unit.
arrived Feb 2026
Built and working fine ~ some learning but all done in 12hr for both.
All disconnected and powered off until DNO approval and my logic for setup correct
So this is a 48v 200A
2 * 16 MB31 314Ah Grade A Bundle (installed into 2* SEPLOS above)
giving home ~ 32kw
1* SYNK-8K-SG05LP1
This is the popular UK Sunsynk Sun 8K ECCO Hybrid Inverter
1* 3meter 50mm² cable RED. - will be cut to same length where needed
1* 3meter 50mm² cable RED. - will be cut to same length where needed
1* firexo All in One Fire Extinguisher (2 Litre / 2 kg) - Multipurpose Extinguisher for ALL FIRES inc
1 * fireAngel Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms
1* FireAngel Heat Alarm for Kitchen with 10 Year Sealed for Life Battery - FA6720-R Heat Detector
above 3 for peace of mind
My Solar runs from an existing inverter in the loft ( 7 year old now) and I will never connect to these solar panels to Sunsnk inverter/this battery system.
Don't care about saving money on this long term, happy to have them both independently working.
I have done various scenario build modelling.
so requirements are
32kw will never be expanded - no desire, don't care if I pull from grid, this system will save money in long term and want it all install and forget. don't care to squeeze every penny out of system as its more a learning journey for future house than saving every penny.
will not be exporting any power to the grid, will not be MCS approved BUT need it UK regs safe.
want to have all cables within trunking/contained to meet regs/safely.
as system within garage conversion into study want to ensure I don't burn myself or anyone.
now my Qs
#1. is it better to have these 2 batteries connected together then connected up to the fuse/breaker etc..
independently from answer to #1, I have been looking to connect this to a busbar, the ones on amazon are sneaky as they state 300a but at 12v.
#2.1. Q - Sunsyk do a busbar ( Sunsynk-bb-300) at cost of £190. - this is expensive I feel but if best choice then will buy
#2.2 Q - Victron do a busbar called Lynx. , can this be used as better bang for buck
#2.2.1. Q if victron is a better choice then which model
busbar or not setup. looking to help on correct sequence on the positive side - I know I have added busbar to each Q below, if I don't need (another cost and failure point) and battery connecting together better then will go down this route. If busbar give more safety then will run down here
#3. Battery → Busbar / Lynx Busbar / Lynx → 200A DC FUSE → DC Isolator → Sunsynk
or
#4 Busbar / Lynx -> MEGA Fuse Holder (200A) -> DC Isolator -> Sunsynk SYNK‑8K
will add more Q into thread as it will help breakdown the Q & A better for me and others- Thanks in advance.
