![]() With this the xtreme will run half a week i guess. I just need to get a cable to the outside and isolate it to get it airtight. When you power down the Xtreme 2 with no charger connected, no lamps light up, as shown next. How to Read the JBL Xtreme 2 Battery Indicator Lights 1. In brief, the JBL Xtreme 2 battery indicator lets you see charging progress, and how full the battery is when not recharging. With my old 2250 ones the xtreme was playing the whole night, so i guess with new 3500mAh cells this thing will run way longer.Īlso i will try to extend the base/foot/pedestal for 20mm so a whole pack of 18650 cells will fit underneath the unit. These display battery fullness and charging status. The internal charger checks the temp probe which is on the board from the battery.īut its quite easy, just give the charger a ~10k Ohm resistor between the minus from the battery and the temp cable coming from the connector. The unit wont charge without the circuit board from the original battery. The xtreme is playing while im writing this. You can also swap the original battery but these 18650 cells are way better in therms of quality and long time stability.Īnother problem is that i didnt found the original battery in europe, so i need to order it from china.too much time. I was a bit concerned that the xtreme would not boot up without the battery board but it did. The sony cells wont need a bms board, i use them for years in ebikes, they dont drift. I spotwelded 4 sony 18650V3 (drift free) cells together as a 2s2p pack and threw the original battery circuit board together with the old battery in the trash. The good news is, 18650 cells fit barely. My guessing is that the circuit board from the battery was faulty and it was not balancing the battery cells, but i dont know if the board is designed to balance.īut i found a bad solder spot also, so who knows. Its a 2 cell battery, one cell was at 3.29V and the other one at 4.26V!!! overcharged. I removed the totally debalanced battery. ![]() I recently had the issue that the battery was running shorter and shorter and in addition to that, the unit went off with a loud knocking sound. First off im from germany, so i apologise for my bad english in advance.
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