rj86
New Member
- Joined
- Jul 14, 2022
- Messages
- 13
Well here is my unbias opinion...
Here are the 2 original threads that kicked this off. I took some photos of the unit before I returned it.
As I had stated on my other thread I ended up returning this unit because it was listed as a 16-cell unit and had all sorts of problems when I installed it into my system with low and overvoltage alarms. My EG4 and SOK units were not happy with this unit at all mostly because this is a 15-cell unit. It would appear the listing on amazon has been corrected to remove any traces of it being a 16-cell unit.
Out the door with taxes, it ran me close to $1700 as of July of 2022 which is not bad since there were no shipping charges.
This unit appears to have possibly purpose designed for the telecom industry based on what limited info I could find on the company itself. and it is now being sold as a consumer unit. (Pure speculation on my part)
AS a 15-cell unit this pack is pretty well built. I like the plastic battery cell holder that also acts as cable management. Gives the inside a nice clean look. This also gives the cells plenty of protection as there is plenty of spacing between the casing and cells to prevent any external damage. There is a test strip in the front of the unit to test each individual cell. It would appear this test strip is wired directly to each cell but has no protection so could be a potential hazard if you shorted something out. All the cabling is tied up neatly and looks like there is very little chance of accidentally pinching a cable during service. All the heavy cable has fiberglass wrap and shrink tubing. Looks like every cell has its own NTC sensor which is a pleasant surprise. Not sure of the BMS monitoring strategy for temps. The BMS is actively cooled with a small 80mm fan. Not sure who makes this BMS or its feature set.
It did come with some 2awg cables and a ground lead. Not sure if they were CCA or pure copper.
Here are some things I wish I could help with but just didn't have enough time with the unit to test:
Here are the 2 original threads that kicked this off. I took some photos of the unit before I returned it.
Need help with a Vestwoods VT48100B
Just wondering has anyone purchased this battery yet or at least knows anything about it? Just picked up one off of amazon and can't seem to find any documentation on this thing other than the little manual it came with. Looking to at least figure out what the BMS is capable of before I add it...
diysolarforum.com
Need confirmation that I am not an idiot...
So I have a fun one for you all. I recently purchased a Vestwoods VT48100b on Amazon and it claimed to be a 16-cell unit. I received it last week connected it up to my system and immediately started getting Undervoltage errors on my system. Pulled the pack out of the system and started checking...
diysolarforum.com
As I had stated on my other thread I ended up returning this unit because it was listed as a 16-cell unit and had all sorts of problems when I installed it into my system with low and overvoltage alarms. My EG4 and SOK units were not happy with this unit at all mostly because this is a 15-cell unit. It would appear the listing on amazon has been corrected to remove any traces of it being a 16-cell unit.
Out the door with taxes, it ran me close to $1700 as of July of 2022 which is not bad since there were no shipping charges.
This unit appears to have possibly purpose designed for the telecom industry based on what limited info I could find on the company itself. and it is now being sold as a consumer unit. (Pure speculation on my part)
AS a 15-cell unit this pack is pretty well built. I like the plastic battery cell holder that also acts as cable management. Gives the inside a nice clean look. This also gives the cells plenty of protection as there is plenty of spacing between the casing and cells to prevent any external damage. There is a test strip in the front of the unit to test each individual cell. It would appear this test strip is wired directly to each cell but has no protection so could be a potential hazard if you shorted something out. All the cabling is tied up neatly and looks like there is very little chance of accidentally pinching a cable during service. All the heavy cable has fiberglass wrap and shrink tubing. Looks like every cell has its own NTC sensor which is a pleasant surprise. Not sure of the BMS monitoring strategy for temps. The BMS is actively cooled with a small 80mm fan. Not sure who makes this BMS or its feature set.
It did come with some 2awg cables and a ground lead. Not sure if they were CCA or pure copper.
Here are some things I wish I could help with but just didn't have enough time with the unit to test:
RS485/SMTP - Was never able to test any of the communication features
Cell Grading - I took a shot of one of the sticks on the cell maybe one of you can ID its MFG and if they are true grade A cells
BMS features - I didn't have time to explore the BMS any further than trying to get it to talk to my system which I was unable to do.
Attachments
-
20220726_073029.jpg74.6 KB · Views: 44
-
20220727_094329.jpg356 KB · Views: 43
-
20220727_094122.jpg68.2 KB · Views: 41
-
20220727_094117.jpg220.7 KB · Views: 40
-
20220727_094110.jpg87.6 KB · Views: 41
-
20220727_094103.jpg192.4 KB · Views: 43
-
20220727_094101.jpg223.6 KB · Views: 45
-
20220727_094056.jpg242.5 KB · Views: 49
-
20220726_073106.jpg76 KB · Views: 46
-
20220726_073101.jpg81.6 KB · Views: 48