KSGER New Battery BMS Version Review

[sam_sam_sam]

This BMS board has promise it made like most BMS battery board I seen before but this one is made to use the power supply input jack and the power supply supply switch

The first dispointment is the batteries that are used are no brand name batteries they claim 2 amp hour maybe this might be the case but I have not done a battery charge and discharge cycle yet so I can not comment on this yet so we will see if this claim is true or not

But I going to use the Samsung battery out of a Kobalt battery from Lowe’s for $20.00

The charger that comes with it says 2 amps @ 25.2 volts we will see what is inside this switching power supply and let you know if it worth a shit or not

Here is a web link where to buy one go to product selection and you will see the kit with the a switching power supply

http://s.aliexpress.com/fqYNf2A3

[stj]

Re: KSGER New Battery BMS Version Review

did you see the new balancers on julien illet's vid?
https://www.youtube.com/watch?v=Fb52fVaMeY8

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

did you see the new balancers on julien illet's vid?
https://www.youtube.com/watch?v=Fb52fVaMeY8

I was impressed with his demonstration of that board ( I have seen some of his YouTube videos before ) I am not very easily impressed

Thanks for sharing this I was wondering if there was such a thing like this but I still think you would have to have a protection board for each cell for you to be safe working with these batteries

[stj]

Re: KSGER New Battery BMS Version Review

i think that's the idea, you can get 2 or 3 cell ones - maybe more.
and they have that circuit for each cell/cell-pair

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

Here are some pictures of the switching power supply board

I have some comments about this charging board the first thing is that the temperature of the case does not any warmer than 102*F which I like

The other thing is that the battery pack for soldering station battery voltage was at 24 volts on the soldering station controller which very close to my Radio Shack meter that I use all the time the charger brought the battery voltage to 25.3 volts and stop charging very good results

What do you think about this charging board

[redwire]

Re: KSGER New Battery BMS Version Review

It looks like six of a single cell charge controller/balancer circuits.
At least the form-factor is better to fit inside an enclosure.

I don't like the small chinese copy JST connector because they're crap and not rated for high currents or fatter wire. I would expect it to give problems.

[redwire]

Re: KSGER New Battery BMS Version Review

I would say the PSU has good bad and ugly.
Good - heatsinks and lots of electronics, the board looks like a modified LED or laptop design.
Missing common-mode choke for EMC and PTC for inrush current.

Fail - primary to secondary spacings. The PCB board is a bad design for clearance, so ensure the DC output is earth-grounded for safety.

I would say it's OK, medium quality.

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

I would say the PSU has good bad and ugly.
Good - heatsinks and lots of electronics, the board looks like a modified LED or laptop design.
Missing common-mode choke for EMC and PTC for inrush current.

Fail - primary to secondary spacings. The PCB board is a bad design for clearance, so ensure the DC output is earth-grounded for safety.

I would say it's OK, medium quality.

Thank you for your comments about this charger I will not leave plugged in when not charging batteries and will keep an eye on it when using it

The component is a switching device and a power resistor and a diode of some type and a cap between the primary and secondary of the switching power supply board

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

It looks like six of a single cell charge controller/balancer circuits.
At least the form-factor is better to fit inside an enclosure.

I don't like the small chinese copy JST connector because they're crap and not rated for high currents or fatter wire. I would expect it to give problems.

I know this as well and plan on doing something different but have not decided on what

One thought is to remove the two power supply wires from the connectors and leave the other ones

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

i think that's the idea, you can get 2 or 3 cell ones - maybe more.
and they have that circuit for each cell/cell-pair

Most of them have some type of balancing circuit of some kind that why I made comment about the protection board for each cell but I would have to do some testing to how it would work

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

did you see the new balancers on julien illet's vid?
https://www.youtube.com/watch?v=Fb52fVaMeY8

I have bought one of these to try it out and see if it needs anything else for it work right when I have the answers I will post them here on this post

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

Things did not go well I was going to use my battery spot welders ( two of them different models but made by the same company ) but it would not fire the transformer again these Chinese Battery Spot Welder Controller are real CRAP you get about a year of use out of them

The transformer are very good I have not any real problem with them

I found some battery spot welder controllers for about $15.00 each which I going to use and when it does not want to work any more just replace with another controller

Because I enough welders with high output transformers that the controllers went bad

[stj]

Re: KSGER New Battery BMS Version Review

check the big transistor - i have seen people talking about this before.

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

check the big transistor - i have seen people talking about this before.

On one of them the adjustment does not work right you have to hold the set button to change the current and the cycle settings so on this one something is not quite right with the microcomputer on this one this one is going to get the new controller set up

The other one it might be the big transistor I have not had time to look at this one yet

[budm]

Re: KSGER New Battery BMS Version Review

May I ask which battery spot welder that you buy?

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

May I ask which battery spot welder that you buy?

Here is one of the battery spot welder

https://www.ebay.com/itm/797DH-Batte...53.m2749.l2649


I going to try and get this second version of the Ksger BMS board and do some testing and see if this one is any better in next few days

[sam_sam_sam]

Re: KSGER New Battery BMS Version Review

Well I have an update

I hook up the BMS protection board and it charged batteries up evenly but the balancing resistors became very warm to the touch which is not unusual for this type of board

But I have use it a few times to see how well it keeps the batteries balanced so we shall see what the results are later