Search found 10 matches

by mattjrogers
Jul 07 2017 7:24am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1031
Views: 71647

Re: bluetooth BMS?

I use the same APP and have found the lock function helpful in a few ways. 1 - I use the lock when I stop to cut off all chance of accidentally hitting the throttle when taking my one year old on and off the bike. 2 - It also helps when the bike is locked up in town to prevent anyone from knocking i...
by mattjrogers
Jun 03 2017 6:59am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1031
Views: 71647

Re: bluetooth BMS?

Ok, so I got the computer software up and running and it is really nice. I had no issues installing or communicating. A few interesting features There is a calibration function that lets you calibrate individual cell voltages and charge and discharge current. This could be useful for someone in test...
by mattjrogers
Jun 03 2017 6:06am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1031
Views: 71647

Re: bluetooth BMS?

I have one of these BMS units. Just installed it a week ago and working through its functionality. I alway hate when a board has conflicting markings - such as a separate place to solder P- and C-, but they tell you to put both wires on the C- tab. Why? I use that same phone APP and it occasionally ...
by mattjrogers
May 02 2017 6:50pm
Forum: Battery Technology
Topic: multiple chargers for a single battery?
Replies: 6
Views: 674

Re: multiple chargers for a single battery?

I would like to know the very same thing. I have two 58.4v lifepo4 charges - one 5 amp, the other 3 amp. The only issue that I could see is if they fight each other at the end of charge as they each sense cuttoff voltage and shutdown at different points or keep turning back on and off because of the...
by mattjrogers
Apr 30 2017 5:45am
Forum: Battery Technology
Topic: Adding a single parallel cell to boost a weak cell
Replies: 3
Views: 378

Re: Adding a single parallel cell to boost a weak cell

Yes, I will report on how the bluetooth connection works out. I just got the link to the cell phone app yesterday. You do have to have a little trust in that it is not solely designed to steal your data as it does have some permissions on your phone, but a battery BMS monitoring app is not he type o...
by mattjrogers
Apr 29 2017 6:24pm
Forum: Battery Technology
Topic: Adding a single parallel cell to boost a weak cell
Replies: 3
Views: 378

Adding a single parallel cell to boost a weak cell

I have a 48v 16s1p 45Ah LiFePo4 prismatic battery with what looks to be one weak cell that drains faster than the rest. Simple question - can I add a single parallel cell to the weak one to increase its capacity and allow the rest of the pack to continue working without tripping the BMS low voltage ...
by mattjrogers
Apr 16 2017 5:58am
Forum: Battery Technology
Topic: Where to buy Bestech BMS
Replies: 8
Views: 1791

Re: Where to buy Bestech BMS

Thanks for that. I looked on his site and they are not just a quick purchase either. I sent him an email to get a quote.
by mattjrogers
Apr 15 2017 8:49pm
Forum: Battery Technology
Topic: Where to buy Bestech BMS
Replies: 8
Views: 1791

Where to buy Bestech BMS

I am looking for a new BMS to upgrade/fix my battery which has a BMS issue. I have heard and read some about the Bestech BMSs, but can't seem to find out how to purchase them. I see their website, but it has no store. Are there any retailer that you know of? They also have many different models all ...
by mattjrogers
Apr 15 2017 6:49pm
Forum: Battery Technology
Topic: BMS sense wire voltage pulsing from 46.1v to 51.2v
Replies: 1
Views: 292

Re: BMS sense wire voltage pulsing from 46.1v to 51.2v

Update I played around some more and not much changed, but I always thought it was weird that this BMS came with only 15 wires. I have heard that a good BMS should have 17 wires for a 16s pack. So I added the last sense wire and now my output voltage is back to 13.1v. The weird fluctuating voltage o...
by mattjrogers
Apr 15 2017 3:22pm
Forum: Battery Technology
Topic: BMS sense wire voltage pulsing from 46.1v to 51.2v
Replies: 1
Views: 292

BMS sense wire voltage pulsing from 46.1v to 51.2v

Hello, first post here, been lurking awhile. So anyone ever checked the voltages at their BMS sense wires and found one that fluctuated back and forth between two voltages every second? That is my issue and it is shutting down my battery. I have a BMS and battery issue that I could use some help wit...