One is an adapter PCB which converts the socket from the battery pack to 9-pin 2.54mm JST male connector
The adapter PCB does expose the negative, so I made my own 9-wire balance lead wire cable with 9-pin 2.54mm JST female connectors both both end.
BTW, I use the overkill 24V 100A BMS.
With that package, I think this gives the flexibility to place the BMS on top of the battery or on the side. No need for soldering. Plug the supplied 8-wire connector to the battery and BMS. No bolts provided, I got them at home depot (M6 10mm) plus washers and lock washers.
Just tested one of these with my new load test setup. I charged the battery last week so it's been sitting around for a few days. I ran the test at 20A with a cutoff voltage of 24V
94.675 ah 2449 wh
View attachment 21041
For the a123 batteries I am using a victron ip67 charger. I like that I can "program" it for custom charger profiles. Most of my battery setups now are 24v and I just use this one when I need to charge from grid. I ordered a nice bench power supply and will use that as well for charging, just waiting for it to arriveWhat charger are you using for the A123? Is the BMS providing a control function for the charger?
For the a123 batteries I am using a victron ip67 charger. I like that I can "program" it for custom charger profiles. Most of my battery setups now are 24v and I just use this one when I need to charge from grid. I ordered a nice bench power supply and will use that as well for charging, just waiting for it to arrive
(1) Now that I think about it, my house breakers are all 15A, so either the PD (40A) or YZ (30A) will likely trip the breaker. Hmmm.
(2) Is it better to have the solar panels disconnected while shore power charging, or can I use both at the same time (ie there's no concern of either putting too much power into the system using battery + mppt/scc + charger, and no concern for impact on the mppt/scc itself with the solar input also loaded with the charger output)?
The charger outputs the rated amps to the battery. It doesn’t draw that from your AC plug. The specs should tell you what it uses as input amps.
Connecting PV and shore at the same time shouldn’t be a problem. Your CC controls that.
Both of those are good choices. I needed a little more portability and I like how easy it is to customise the victron. I sacrifice some charging power for those features but it works with my planThx for the info. Looks like BigBattery that sells the A123 recommends this charger:
24V 30A DC Charger – BigBattery.com
bigbattery.com
I'm going to try the one recommended by Will:
PD9240-24 Volt Power Converter / Battery Charger
Progressive Dynamics PD9240-24 volt power converter / battery charger for specialty vehicles, applications. Built-in 4-stage charging for battery management.www.progressivedyn.com
Just tested one of these with my new load test setup. I charged the battery last week so it's been sitting around for a few days. I ran the test at 20A with a cutoff voltage of 24V
94.675 ah 2449 wh
View attachment 21041