Podręcznik armatury Bosch 1 270 020 505

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a big WARNING while taking out the pack, be careful to not damage the indicator button, it is very easy to rip it off.

Congratulations for the video, very instructive and it has helped me, I have a query: to connect with the Bosh connector of 3-wire battery (positive, negative, the other) as it would connect to a non-bosch ebike motor that only has 2 wires current (positive and negative). I don't have much knowledge of electronics.

manufactures try to keep us out repairing stuff like this nice job getting it opened

Hello, I have a 500wh frame battery, it operates absolutely fine and works properly while on the bike. However when off the bike and off charge - If you leave it for weeks and weeks it drains, due to the led showing the charge state flashed every few seconds. Do you have any idea what might be the problem??? Thanks

I have one of these. I sprayed it with a garden hose to clean off mud, while it was on the bike and the battery indicator and button stopped working. I think it still turns on via the head unit, but I'm a bit afraid to use it now. Do you think it is worth the effort to open it up and check the connectors for corrosion? Annoying that these are supposed to be water proof but a hose damaged it.

Is there any way of interrogating the BMS? If you could do that, surely then you could adapt another 36v battery to suite, like a Husqvarna lithium powerpack...

Thanks for the great video - I recovered some of these packs all in tact - was wondering about the additional input 3 wires (green , yellow and grey) as I have read they are to allow the charging process and should be hooked up to 5v dc - if I hook them to a usb charger at 5v which colour is positive and negative and what does the last wire serve? I would be hooking the red and black to a standard 2amp 42v charger (+and-)or something I can buy on aliexpress that does lion batteries. Is this idea something that would work? or are those 3 wires something tricky that is controlled inside the bosch branded ebike chargers. Many thanks

Hello. How good will 5 years old battery be (only ridden 1000km )?

Why do you use these external cell holders for charging the cell? Is it to prevent the liquid to damage the charger? I had this twice and the corroded the contacts of the switch button...;)

Hey! Great video. Thank you :) Just bought an ebike with this battery and it completely died on day 7 of ownership, waiting for the warranty - but just wondering what the common problems are to cause this type of battery death?

You can use a bench power supply to charge them to 2,5V slowly with little Amperage like 100mA. If the cells take a charge without getting hot they mostly can be salvaged. Then you can charge them up fully with our Litokala or similar. I normally use the TP4056 charger ic cause it handles the cells quite softly below 2,5V - they will charge at nearly all voltage but slowly up to 2,5V. And: i would put the "shame box" somewhere outside or in some fireproof box/cabin. When a cell has high self discharge it has probably dendrites growing through the separator - can be dangerous in some rare cases.

hi battery guy, great video! i think original battery is way to expensive and are thinking about converting to a normal 38v li-ion battery.. but the bike dont seem to respond to + to + and - to -. it due to the the 5 pin connector. do you have a solution for this?

Tack för en bra video

I have a 2017 Powerpack 500 that I want to re-cell but I'm seeing different information on the internet about whether it is possible due to the supposed issue of the BMS 'suicide chip' on the PCB. Can you just disconnect the BMS and reconnect it after re-celling? Or is there some trick? I've seen someone else recell a Bosch battery on YouTube, but it was the Bosch Classic+, not a Powerpack. He seems to just disconnect the wires, desolder it from the battery pack, recell, and resolder the BMS afterwards. But he doesn't show it connected to the bike and whether there are any errors. On the flip side, none of the people saying the BMS will suicide have any direct knowledge of it happening to themselves or someone they know. However, there are a lot of commenters in the video of the guy rebuilding the Classic+ with dead BMSes.

Yup everything dies...

Water damage? Did you know these bms are resistant to moisture? I had several and even after drowning in water they kept working fine...

I have a battery with 4 wires. 2 for 36v, but the other two are used for what please

so how do you check the bms then

Is it possible to change the 5 pin connector on the battery? My 5 pin connector on the battery is corroded, I have tried to clean it with electric connection cleaner, I have also replaced the pins on the bike, but I do not know where to find the 5 pin connector for the battery.

i have a serious question to ask iv bought a second hand powerpack 400 repaired the battery but the bms is shot, i am struggling to find one unless you can point me in the right direction so here goes, can i piggy back the battery i repaired onto the working 400 battery its not a problem with the case i can 3d print something that will bolt to the original 400 battery and the new 400 battery pack i built will fit in that,m is this feesable, also i have been told that the bms in these batteries has to be reprogrammed when u replace the battery, as far as i can see there is no way the bms can tell you what make size and amps its got connected to it unless its is really a far more intelligent bms than what i though, the reason for piggy backing the battery is for the amps not the voltage to get a longer ride out of the bike without using a second battery can you tell me if this is possible or not, mr battery man

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