ElectricGod said:I am moved into my new house and found my box of batteries. I had no problem connecting to the BMS on my 16,000mah 16S LIPO pack. My phone connected immediately. My guess is the BT module was either fully awake or in some kind of low power receive only mode.
patrickza said:Phew, I've gone through all 18 pages of this thread today to make sure this is the BMS I should order. My bike is 24s 10AH lifepo4 powered, and I never run more than 65A peak or 25A continuous. I'm looking forward to be able to check how charging is going without having to go outside this (southern hemisphere) winter
So with that in mind, will the 70A version be good enough, or will the 150A version offer better reliability?
made_in_the_alps_legacy said:ElectricGod said:I am moved into my new house and found my box of batteries. I had no problem connecting to the BMS on my 16,000mah 16S LIPO pack. My phone connected immediately. My guess is the BT module was either fully awake or in some kind of low power receive only mode.
I wired up the 18s version of "BMS battery" smart BMS. when I try to connect with the android application from their website, it does not remain connected and a message "connection refused by xiaoxiang BMS" shortly sowes up. I tried the "smart BMS" application and the behavior is the same : it does not remain connected.
did u figure out how did u woken up ur BT module ?
EDIT : 4hours later and 3 different applications attempts, I got success with the one of the link below :
https://www.lithiumbatterypcb.com/smart-bms-software-download/
NOTE : some explanations given (such as BT module behavior, ...) w. the link above
looks nice...
Inwo said:English manul.doc
flippy said:
Brand new pack (50Ah) first charge.
So no, you dont need the lcd, but it is much more practical then using the app
patrickza said:Thanks for that flippy, looks like I won't need the screen afterall!
cwah said:flippy said:
Brand new pack (50Ah) first charge.
So no, you dont need the lcd, but it is much more practical then using the app
Which BMS is this?
flippy said:are those EC5 plugs? what is your limit for using those? (in amps)
i see they start getting melty around 40+ amps.
Dui said:Very, very interesting thread.
Actually, I just bought one of those BMS 2 days ago, without even knowing they were already discussed here. Pretty happy to see that apparently that wasn't too bad of a choice.
I've purchased the 300A model, for my LiFePO4 23S 2P (72V 40AH) A123 pouch cells battery pack.
This one:
https://item.taobao.com/item.htm?spm=a230r.1.14.147.63171b15jsMHbW&id=554867081787&ns=1&abbucket=6#detail
I think the wiring and configuration should be pretty straight forward, but there is only one thing that I'm not sure of yet:
My plan is to use two of these batteries in parrallel, for a total of 80AH. So I'll need 2 of these BMS in the end. The thing I'm worrying about is the bluetooth: will it work fine if I have two BMS working at the same time? Is the app able to switch from one BMS to another? Can I change the bluetooth device name in order to know which BMS is which? Also, is is possible to change the password for something slightly more secure than 1234?
Any relevant information regarding this particular matter would be greatly appreciated.
ElectricGod said:Why do you think you need 2 BMS? What's your max current draw? If it's less than 300 amps, then 1 BMS will work. If I'm running LIPO. I like to have each string of packs on their own BMS if I'm using dumb BMS. With smart BMS, I no longer care as much. There's no reason why you can't run from a single BMS if you are running at less than 300 amps. Since you are running LIFE (meh), I see no reason for dual BMS.
ElectricGod said:For these better 24 and 32S BMS, that's not a problem...name them as you see fit. REgardless of BMS type, connecting and disconnecting from one to connect to another is straight forward and easy. The 16-20S BMS don't even need a password to connect...talk about NOT secure!
There's an option in the phone app that lets you name the BMS something meaningful to you...such as BMS1 o24S100AH. The default name is BMS-ANT. The "Modify BT ADDR" is the option for this. And yes to changing the password.
Dui said:ElectricGod said:Why do you think you need 2 BMS? What's your max current draw? If it's less than 300 amps, then 1 BMS will work. If I'm running LIPO. I like to have each string of packs on their own BMS if I'm using dumb BMS. With smart BMS, I no longer care as much. There's no reason why you can't run from a single BMS if you are running at less than 300 amps. Since you are running LIFE (meh), I see no reason for dual BMS.
Mainly for two reasons:
1-I'll have two battery blocks, which I may swap from time to time depending on what I'll want to do (lighten the bike, go for long range, go for 144V instead of 72, etc.) This gives me flexibility.
2-I plan to change my controller soon for at least 5-600Amps (battery continuous current), if I manage to find a good one.
Right now with the sabvoton one BMS is enough, but I'd like to leave as much room as I can for a better setup in a near future.
I actually see no reason for not having 2 BMS, it's not like those things are super heavy or expensive.
ElectricGod said:For these better 24 and 32S BMS, that's not a problem...name them as you see fit. REgardless of BMS type, connecting and disconnecting from one to connect to another is straight forward and easy. The 16-20S BMS don't even need a password to connect...talk about NOT secure!
There's an option in the phone app that lets you name the BMS something meaningful to you...such as BMS1 o24S100AH. The default name is BMS-ANT. The "Modify BT ADDR" is the option for this. And yes to changing the password.
Great, thanks for the info!