Hi, yes, from search results it looks like internal battery is the same. But take it apart to make sure if you need to change it anyway. Buying a new one will set you aside of 150 - 200 USD. I don't know a shop in the US that sell these, but a search on google on "battery for E45 e-scooter" should give you some google shop results in your area.

If you can get it changed under warranty, then it's the best way if you don't want to mess with it. To me it sounds like you either have some strings that have a few dead cells, lowering the capacity of that string, or the pack became unbalanced. Either way you have open it, measure the voltages and get your pack in good shape again if you want to use the full range. If you take your time to open the pack carefully, you will learn something new and probably fix others scooters in the future as this is a big problem on majority of lithium batteries after they get some cycles.

@@thecelldoctor8890 thank you very much for replying!! The scooter has an app which shows the voltage etc of the battery. It shows quite high, at over 53 V fully charged. The power readings on charge make sense as well, as do the capacity readings of 12000 mAh on full charge. It just discharges so fast! Could it be something to do with the calibration of the battery?

@@herrzyklon Most of the e-scooters run on 13S . That means you have 13 strings of 4.2 volts. So the fully charged voltage should be around 54.6 V. Trouble is that you see overall voltage in the app and by measuring the charging ports leads, but some of the strings can overcharge to 4.3-4.4 to compensate for the other strings that are too discharged. That will depend mostly on the BMS used in those packs. Some packs use some cheap BMS'ses that don't balance cells at charging and overcharges strings as well. Try to get at least to the balancing leads of the battery and measure individual strings to know for sure what's going on.

The Long BMS board has markings for each cell. Positive to negative and which cell number goes where. It's a 10S pack. I recommend understanding how series and parallel works first before redoing the pack. It's 10S 2P. Once you understand this, you will figure out how to assembly them back.

It's a PCB we developed. Can order one here: www.deepcyclepower.com/old/product/10s-battery-balancer-megabalancer/

¿Para cargar este tipo de batería o para probar las celdas? Producimos un dispositivo llamado cargador megacell. Puedes ver más información en deepcyclepower.com

@@thecelldoctor8890 pero como llama la maquina que carga las bateria . No la fuente hablo de la que conecto ala fuente

It's a board that we built www.deepcyclepower.com/old/product/10s-battery-balancer-megabalancer/

Ese es se puede perder a Colombia Y me podría explicar como la coloco a carga .

Some of the cells were discharged and some not. Applying voltage on the discharge lines might wake up the battery, but it will not balance the cells. Charging individual cells from the series will ensure that all cells were fully charged and the pack is balanced.

@@thecelldoctor8890 Yeah those cells that discharge like that are weak ones and proably bring down the rest of them by not being able to charge fully to 4.2, replacing one could bring back lots of capacity. I have an e45 i found in the dump with an error, turns out the internal one just wanst charged, because the external one wasnt making connection to it because it got loose. Taking off the external battery and charging the internal one fixed it but getting the external battery was the trickky part, i see I wasnt the only one with issues heh, i had to use a screw extractor to get it out, probably another reason it was thrown out, it looks like they also tried to get in there, eventually stripping it. Anyway i only get 12km range with this battery pack, sure its not going to be the full 22km like it was new but i think replacing a weak cell or 2 may bring it back closer to 20. So this information is very valuable thank you, even to build a new one from scratch, lots of good info here thanks.

Hey