The additional Batteries Arrived.
The new Batteries arrived on Jan 3rd, about the time I expected them anticipating delays due to the holidays.
I was initially concerned that they were not the 'Smart' / 'Bluetooth' models as the EE-BMS did not find them. There is no indication on the outside of the batteries that suggests they are the 'Smart' type. The three existing batteries on the boat are all Chins Smart 100Ah 12.8v LiFePo4 batteries, the same as I ordered.
Reaching out to Chins customer service and sending them an image of the battery labels, I asked if they could confirm the batteries are 'Smart'. Overnight, Peggy asked if they show up on the Phones list of nearby Bluetooth devices. DUH! So I checked, and they did show up. Well that's annoying.
In the morning Chins replied that I should use the BAT-BMS not the EE-BMS - Duh#2. I really should RTFM. So I downloaded the BAT-BMS and it found the one battery but not the second. Another email to Chins. They responded in a couple of hours advising that I should charge them and then discharge and recharge them. "some batteries require a simple charge and discharge before they can be linked.".
Ok, that worked.
I put one battery on charge using a LiFePo4 4Amp Charger. It was only 50% charged according to the charger.
After charging it overnight I disconnected the charger and attached a bilge pump that was sitting in a bucket of water. Discharged for 5 hours but still could not see the battery on the BAT-BMS app.
Charged it for another few hours and then it showed on the App.
Left it charging until it showed 100% on the App.
Then I repeated that process on the second battery and the same outcome. Now both batteries show on the BAT-BMS app and both are charged 100%
With the batteries ready, I placed the order for the additional Fused Terminal Block, Fuses and Switch. They should arrive next week. I'll head down to the boat tomorrow and confirm if I need to upgrade the wiring from the battery box to the Victron Multiplus Inverter Charger.
I'm busy working this week, so not going to get much on this project done plus, I'm expecting the order from Jamestown Distributors so that I can complete the refinishing of the top deck. That should take 4 days with two trips to the boat each day. So a busy week.
We're getting there.
Update - Thursday Jan 9th. 2025
As per the plan ( and Chins advice ) I wired the two new batteries in parallel and left them connected for 24 hours.
Result: Both battery packs are within 0.01 volts of each other, the highest and lowest cells are similarly within 0.01v
Before you jump on me for the thin cables --- I checked the current flow and it was initially a max of 1.2amps and quickly dropped to 0.9.
Here's screenshots of the two batteries displayed in the BAT-BMS after the 24hours of Parallel connection.
I like that the App allows for switching between each of the connected ( connected to the App ) batteries rather than have to back out and select another battery in the EE-BMS
The rest of the equipment is on it's way and should arrive this week. I'll go down to the boat today and check if I need to upgrade the cables from the batteries to the Victron Multiplus.
Should be able to get to finish this upgrade next week.
Target date is January 23rd - hope to get the boat out with some buddy boats.
See you on the water.
Short Update Friday January 10th.
Amazon has lost part of my order for the components of the upgrade. Just a delay of a few days I hope.
I was able to take the batteries down to the boat and physically put them in their new home. I had to relocate some consumables - Oil, Coolant, Greases etc. I found some were duplicated so I brought them home. The bag containing the extras actually felt heavier than the two LiFePo4 batteries.
I updated the wiring diagram as I'm going to have to relocate some of the cabling between the Selector switch and the Shunt & Victron Multiplus.
Again, see you on the water.