Wade Posted January 28, 2017 Share Posted January 28, 2017 I have a Gotway mcm3 with a bad BMS. Anyone know where I can purchase a new BMS? Link to comment Share on other sites More sharing options...
US69 Posted January 28, 2017 Share Posted January 28, 2017 13 minutes ago, Wade said: I have a Gotway mcm3 with a bad BMS. Anyone know where I can purchase a new BMS? which area? europe? 1radwerkstatt.de Link to comment Share on other sites More sharing options...
Wade Posted January 28, 2017 Author Share Posted January 28, 2017 I'm in U.S. Hawaii Link to comment Share on other sites More sharing options...
smallexis Posted January 28, 2017 Share Posted January 28, 2017 2 hours ago, Wade said: Anyone know where I can purchase a new BMS? why do you say the BMS is bad? Can you post a picture of what you need? Link to comment Share on other sites More sharing options...
Wade Posted January 28, 2017 Author Share Posted January 28, 2017 I want the whole board. I had a bank of cells go bad three times. I would think that bank of cells are not being managed. Link to comment Share on other sites More sharing options...
Wade Posted January 28, 2017 Author Share Posted January 28, 2017 I want the whole board. I had a bank of cells go bad three times. I would think that bank of cells are not being managed. Link to comment Share on other sites More sharing options...
smallexis Posted January 28, 2017 Share Posted January 28, 2017 Ok you can replace this BMS by a no name one (generic one) but it's needs to solder new tabs (that is not very difficult) I have done it 2 times (with Gotway 340Wh battery) and it's works perfectly. (I have replaced a NINEBOT BMS too, see below) The first step is to remove the board (I advise you to cut the small tabs as they are desalted, in order to avoid a short circuit) Second step is to separate both half battery pack, I have made a video for that : Third step is to solder new tabs at right place and after that, you can put each half pack on the new BMS. And to finish, a last video : Link to comment Share on other sites More sharing options...
Wade Posted January 29, 2017 Author Share Posted January 29, 2017 Great info. Now where do I buy that no name BMS? Link to comment Share on other sites More sharing options...
smallexis Posted January 29, 2017 Share Posted January 29, 2017 6 hours ago, Wade said: Great info. Now where do I buy that no name BMS? this BMS is nice and at a very good price: https://fr.aliexpress.com/item/16S-60V-or-67-2-V-unicycle-lithium-ion-battery-BMS-60V-li-ion-battery-protection/32422681053.html?scm=1007.13482.37805.0&pvid=6848e2c8-46c5-4eb9-831e-ad4df3ef627b&tpp=1 tabs : https://fr.aliexpress.com/item/100pcs-lot-conductive-Solder-Tab-For-14500-18650-AA-Sub-C-Rechargeable-Battery-Cell-2-5x0/32665852340.html?spm=2114.30011508.3.1.BddpYN&ws_ab_test=searchweb0_0,searchweb201602_3_10065_10068_10000032_119_10000025_10000029_430_10000028_10060_10062_10056_10055_10000062_10054_301_10059_10099_10000022_10000012_10103_10000015_10102_10096_10000018_10000019_10000056_10000059_10052_10053_10107_10050_10106_10051_10000053_10000007_10000050_10084_10118_10083_10000047_10080_10082_10081_10110_10111_10112_10113_10114_10115_10000041_10000044_10078_10079_10000038_429_10073_10000035_10121,searchweb201603_10,afswitch_3_afChannel,single_sort_3_default&btsid=296043db-a8b4-4837-a053-ec89229bf0fb Link to comment Share on other sites More sharing options...
Wade Posted January 29, 2017 Author Share Posted January 29, 2017 Your the best! Thank you! Link to comment Share on other sites More sharing options...
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