NinebotPTRELITE+

I only know that they stopped selling and marketing them in the US last year. I am talking about the two wheel PTR Elite+

Trying to use the NINEBattery App using a newer android. and a PTR Elite+. I would love to hear if you are successful in getting the Bluetooth on the android to connect to the PTR Elite Bluetooth.. Minis have connected, but I have not heard of anyone that has got the app to connect to the PTR Elite.

My packs on two Elites that I bought in 2017 were made with cells manufactured in Oct 2015. Both packs still in use. I have to be careful not to overcharge now that they are getting old. If I let them on charger too long, I get error code 37 . I drain them with a 100 watt bulb to get them down to 55 volt. Then they work well, but only about 16 km per charge. I had to rebuild a third pack. Can get about 21 Km on the rebuilt. I imagine you got a Ninebot from the first China shipments. Few dealers have the time or resources to keep batteries charged . They sit in the boxes in the warehouse and if any of the individual cells in the pack get below 2 Volt, they will likely be degraded and the pack performance will suffer. If you buy a new replacement battery - demand fresh stock. .

The NINEBattery App link can easily be found by searching this forum. Just type in NINEBattery into search at top right of banner page. Then check the threads. I would love to hear if you are successful in getting the Bluetooth on the android to connect to the PTR Elite Bluetooth.. Minis have connected, but I have not heard of anyone that got the app to connect to the PTR Elite.

great.

Sorry, not that smart.

Has anyone been successful connecting a Ninebot PTR Elite to the new NINEBattery App using a Android 4.4.1 or newer version????????????????? Or with any device?? Thnks.

I whole heartedly agree. Cells that have dropped below 2V SHOULD NOT BE CHARGED. I failed to mention that in my post. Over half of the left side pack had cells below 2.0 Volt which went to the recycler (Batteries Plus). The trickle charger I was using had a 12.5 V Output, but I monitored the charging process of each group of 6 cells every 15 minutes until they reached 11.5V. This was all done on a LARGE concrete driveway, far away from people, equipment and HOME! You can never take too many precautions when working with lithium cells! Once all cells were equally charged +/- .05v, ( My spot welder has a built-in charger, so I was able to get equal charges on all the cells) .I assembled the pack and connected the used BMS. Once I got it to rest, the Ninebot charger recognized the 30 cell pack and brought the pack up to 62.6V. In daily use, I only have to charge the pack once a week.. If you are thinking about working on lithium cells, read, read, and read again ALL precautions. THEN GO BACK and read some of the horror stories! They are true, and CAN happen to YOU!! Not trying to scare anyone, but only undertake such efforts after significant research.. Brain surgeons do not just start cutting!! I read everything I could find, watched every video out there, talked with local recyclers and those that had experienced a rebuild project. LEARN from other people's mistakes so you do not have to experience the same misfortune. THANKS CHRIULL.

One BMS moved over to the new cells without a hitch. The second kept reporting 14.40 Volts which was the remaining voltage in the old cells before I recharged blocks of 6 cells (3S2P) using an automotive trickle charger (12V, 2A). I did keep all the cells that came back to 4.2 V and trashed the ones that would not recover. A couple did swell, but no fire or explosions! Despite being disconnected from cells and wired to all new cells, the second BMS reported the same 14.40V. It finally reset after unplugging the main connector on the board and replugging. Why that would be any different than having all the leads unsoldered I do not know, but came back reporting 62.6V which was what I had hoped for? The russian on eBay does have the correct BMS units for the elite at $75 plus shipping.

Thanks for input. No success as yet.

Had an old android phone with 4.4.2 and Ninebot V4.2.0. Tried connecting to both apps to get Battery app to connect to Bluetooth, but still no success. Do want to thank you for your post and suggestions. Was certainly worth a try.

Had an old android phone with 4.4.2 and Ninebot V4.2.0. Tried connecting to both apps to get Battery app to connect to Bluetooth, but still no success. Do want to thank you for your post and suggestions. Was certainly worth a try.

If this is a PTR Elite try bluetooth re-pairing. Pairing a Keyfob Tools Required: Phillips-head screwdriver Paperclip Procedure 1. Make sure the PTR is powered off and the charger is not connected. 2. Using a Phillips-head screwdriver, remove the righthand screw on the charge port 3. Insert a paperclip or similar tool into the hole that the screw came out of. 4. Momentarily press the button at the bottom of the hole. NOTE You should see a red light in the hole. 5. Press the Power Button on the keyfob. NOTE You should see the red light blink four times. 6. Test the newly-paired keyfob by using it to turn the PTR on and off. 7. Reinstall the fastener.

HOW sweet! . I would be glad to offer pointers as needed when the time comes. I only risk losing body parts for my own projects

Had been searching for modestly priced rebuilt packs in the US with no success. Finally ended up doing a pack rebuild on my own. Found the exact OEM 18650 LG Cells out of Korea for $230USD for the 60 cells. Pure nickel stripping and cell holders cost another $30, but was able to reuse the original 15S2P BMS's which both reset nicely. I already had the spot welder. The "new" LG cells were from a 2016 mfg batch and equally charged at 3.7Volt give or take .04 I have been running the pack for six weeks now. Working like a new pack - of course it almost is new! Just here to say that rebuilding a Ninebot battery pack can be done by "carefully" following guidance found online and Youtube. Learn from other people's mistakes and successes. I did have someone standing by with fire extinguisher and I wore gloves, eye protection and full face shield while working with the packs. Spot welding batteries can go smoothly and easy until IT DOES NOT! I had no problems , but took my time and checked and double checked polarity, wiring positions, placement BEFORE every weld. I will rebuild all my packs from now on, but will try to maintain the same "sense of danger " as I did doing the first pack.