[RE-wrenches] SOK Batteries

Steve Higgins steve at surrette.com
Wed Oct 11 18:53:22 PDT 2023


Some of these BMSs are not very tolerant of heavy loads...   the heavier
load may have triggered the BMS to shut down and go into self-protect mode.
It can take a few hours to days for voltage to recover. Isolate the battery
from the parallel connections and give a few days of no load time to
recover and reset.

After that, use a regulated power supply and connect it to the battery to
charge. You only need a slight current, usually less than ten amps.   Set
the power supply up at the base voltage 54 to 56 volts.

Last, supplying charge voltage on and off several times can wake up the
BMS, but again, I would only try this with a regulated power supply.

The bad news is they may have killed the BMS... once you do that, it's a
hard sell for most manufacturers to cover under warranty.

Good Luck...


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On Wed, Oct 11, 2023 at 6:42 PM Lou Russo via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> I would call Current Connected in Nevada.
>
> They handle SOKs for the US market and I have  found there tech support to
> be knowledgeable and timely.
>
>
>
> On Wed, Oct 11, 2023, 2:06 PM Jay via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
>> Buy another SOK battery so that doesn’t happen.
>>
>> Or maybe happens less
>>
>> Jay
>>
>>
>>
>> On Oct 11, 2023, at 5:55 PM, Kristopher Schmid via RE-wrenches <
>> re-wrenches at lists.re-wrenches.org> wrote:
>>
>> 
>> Hello brain trust,
>>
>> Anyone have experience with SOK lithiums?  Here's my issue.  Client has a
>> tiny home and bought their system online (I know, run away...).  Whenever
>> they start a larger load (power tool, hair dryer) it pulls too much current
>> and causes the BMS to shut down the battery output.  Not necessarily a huge
>> issue, but I cannot get the app (ABC-BMS) to reset the batteries.  I log in
>> with the password and it gives me the reset option, but it will not allow
>> me to click OK.  Hooking up an external battery charger has been my only
>> successful reset solution.
>>
>> Any help would be greatly appreciated.
>>
>> Thanks,
>> Kris
>>
>> Shine On!
>>
>> Kris Schmid
>> Legacy Solar, LLC
>> 137 West 1st Avenue
>> Luck, WI 54853
>> www.legacysolar.com
>> 715-653-4295
>> NABCEP Certified PV Installation Professional
>> Licensed Wisconsin Master Electrician
>> BSEE
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