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Which bms to use
#1
Some help figuring out which of these two bms to use?.. I’ll just be using one of those battery modules in the pic for now.. If I was going to have a large setup I’d get batrium..
Also do I have to have an Android? Or can I use my iPad to adjust what’s available to adjust aside from needing a pc..
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#2
if you are going to use solar get the chargery bms16t, its in the first picture with the battery. I been using the bms8t on my battery pack and its working excellent. It use external contactors/relays to disconnect the charging/discharging, no need for bluetooth it has its own bright lcd screen to program it, you can set the cell cutoffs at the voltage you need. It also balances at 1.2a per cell and has audio alarms/temp sensors. 

Its more expensive then a regular bms but it can handle whatever amps you need, limited by the size of your contactor. The amp rating for the chargery is for the shunt use to measure amps, I have the 100a model, they have some that go to 600a. I use a 30amp automotive relay on my system since I never use more then 15 amps. 

On ebay I see a chargery bmst16 (300a shunt) for 109 dollars, you have to supply your own contactors/relays. I use a 4 dollar 30a relay on mine. You can download the manual for the bms16t from the chargery website so you can read all the parameters it can monitor.

The reason to use external contactors/relays on solar is for the bms to disconnect (with external relay) the solar panel when any limits are exceeded. On a regular bms, if the mosfets stop the charging you get voltage surges from the solar controller.

The drawbacks are its larger, its 2 units one goes on battery and the other (lcd screen) you place close to you. The 2 units are connected with a cable (not wireless) so its always ready to read with no delays to logon. The shunt is also large and heavy. There's wires everywhere. Its not something small and compact like the regular bms.   

Doin it likes this post
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#3
Tbh jony I was wanting to use one of the 2 bms in the pics (excluding the chargery which just happen to be in the pic) because I’m thinking they would be easier to install, which is good for someone that doesn’t have much experience with this stuff like myself..
That being said I can see why it would be important to use a relay/contactor instead of mosfets due to the reason u explained..
The chargery on eBay for 109 seems like it is only the lcd screen.. Don’t I also need the module that goes on battery? here’s some pics
The module u said goes on battery, is that just the relays/contactor.. u said I’d have to buy them separately...
looks like a lot of the ports that exist on the module that goes on the battery are actually on the lcd module for 109 on eBay?
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#4
SIMP BMS - it will connect to the OEM Chevy Volt BMS slave on the 16s volt pack.
Current system: 9.6kWh wet Nicad batteries, 16S1P Calb LiFePo4 210aH, Batrium WM4, Outback vfx3048 inverter, mx60 mppt controller, flexware 500 mounting hardware, 2.4kW solar array, 6kW lister diesel genset. MY'13 Vauxhall Ampera
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#5
Hughf can u supply a link for it?
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#6
https://lmgtfy.com/?q=simp+bms
Current system: 9.6kWh wet Nicad batteries, 16S1P Calb LiFePo4 210aH, Batrium WM4, Outback vfx3048 inverter, mx60 mppt controller, flexware 500 mounting hardware, 2.4kW solar array, 6kW lister diesel genset. MY'13 Vauxhall Ampera
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#7
Yeah I did the search before I asked for the link.. not able to find a 16s for sale for gen2 of that type of bms
HughF likes this post
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#8
(10-03-2019, 08:09 PM)Doin it Wrote: Yeah I did the search before I asked for the link.. still not able to find a 16s for sale for gen2
Gen 1 Ampera/Volt is supported - you're using a Gen2 pacK?
Current system: 9.6kWh wet Nicad batteries, 16S1P Calb LiFePo4 210aH, Batrium WM4, Outback vfx3048 inverter, mx60 mppt controller, flexware 500 mounting hardware, 2.4kW solar array, 6kW lister diesel genset. MY'13 Vauxhall Ampera
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#9
Yes, the 48v packs are gen1, I’m using gen2 60v
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#10
From what I’ve researched, Seems like the overall consensus of these batteries (60v gen 2) is that they do not need to be balanced often or if at all...unless they are discharged to low or charged to high.. These modules have a cakewalk life being designed for EVs higher power needs but only using them for small solar setups that use much less power..
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