When you use a wrong charger your battery will break and you cant use your Walther SSP-E anymore. Mine broke 2 times and it was about 3 months away from me before i got it back after repair service. It broke down again and i was talking with a technician with Walther and he send me some repair parts so i can repair it myself. Its 30 minutes work if you got the right Equipment. I will explain everything i did how i fixed my weapon.
1. Separate the upper from the lower (the 3 screws on the front of your pistol).
2. Push the pin out (See photo below)
3. When the pin is out you can push the whole trigger unit forward. (You push it forward then you can lift it up.
4. When you have the trigger unit in front of you you see the battery on the bottom. Its is fixed with two sided glueing tape.
5. Disconnect the battery and connect the new one.
6. Put it back together
Thats it. Dont do anything stupid if you don't think you can repair it bring it to a local shop.
Thanks very much for that How-to and for the (for us as manufacturer) relaxing info, that the dead battery was obviously caused by a wrong charger (or was the battery still "alive" and could only not been charged with that broken charger?)
We supply the pistols complete with a 5-V-charger and recommend to use that, and the connection via USB and computer is also safe and reliable (okay, it may cause some raised eyebrows if you do it in your office, with the gun aside the keyboard...)
I tested the batteries with a multimeter and the broken one only gave 1.2 volt. After 30 minutes of charge he didnt fill up. The new battery gave 3.6 volts out of the box. After charging he gave 3.8. Im not gonna use a wall charger again. Im gonna buy myself a small batterypack so i can charge it very slowly so it will not break again.
Your co-workers just send me a new original battery and charger im waiting for that now to arrive.
About charging it at your desk. Once i was on my way to a competition and was totally forgot to charge it. I charged it in my USB plug from my car :P.
Lithium batteries are great, but they benefit from a little extra care.
For Li-poly battery a fully charged cell would be 4.2V per cell.
The nominal cell voltage is 3.7 v, and a fully discharged cell for long life should
not go below about 3.0v (better lower limit is 3.2v or 20% remaining).
The critical discharge voltage is 2.5v, at this level the cell is damaged and
cannot/should not be used.
The more serious issue is overcharging. If one cell gets seriously over charged
getting well above the desired 4.2V top charge. This can result in pack failure
or can cause the over charged cell to "vent with flame". ie FIRE
I don't know the Walther circuit, but a properly designed Li-Po battery setup should
have both a over voltage and under voltage protection circuit as well as a automatic
charger circuit for Li-Po.
Attachments
li-po discharge curves at room temperature.jpg (13.24 KiB) Viewed 5552 times
CamelNL wrote:I think I used a broken charger. The charger i used was a 5volt 1amp (chinse brand) When i use my HTC charger or on the pc it charges fine.
I have to ask why didn't you use the charger supplied with your SSP-E?
The first charger I got was this one. According to the manual every charger should work. On the other hand it's not sure what caused it to break, and I'm not gonna find that out.
CamelNL wrote:I tested the batteries with a multimeter and the broken one only gave 1.2 volt. After 30 minutes of charge he didnt fill up. :P.
This time if a cell falls below 3.2v charge it, if it falls below 2.5v scrap it, DO NOT attempt to charge/overcharge a LiPo or you risk a FIRE.
Lots of LiPo information and fires on youtube. http://www.youtube.com/watch?v=z3o_2mwRPdw
jbshooter wrote:Is there anybody out there wanting to share their experiences with Walther SSP or SSP-E.
The gun is brilliant in many aspects and shoots very well. It instantly helped me improve my results quite dramatically (from 43 to 45 on average). It is quite an expensive pistol but I feel it is worth the money as there are so many different settings available, dry practice possible, and the sights are just awesome. I would strongly recommend it.
I would like to add to CamelNL’s post regarding a battery change in the Walther SSP E.
Before trying to press out the pin holding the trigger assembly in place first loosen the grub screw from above that locks the pin securely otherwise damage will occur.
Once loosened the pin requires almost no pressure and the job is easily performed.
The battery 401230 is a lithium polymer or lithium ion battery which is 4mm x 12mm x 30mm in form factor size.
It is a single cell 3.7v battery with a JST plug. Cells vary from 80-120mah capacity.
This cell is available in two forms, with or without the built -in PCB charger board.
It looks in the photo like the Walther battery has a PCB mounted on the cell end and standard JST-SH (1mm pin) plug.
The PCB board has a under and over voltage cut-out to allow charging from a 5v source such as a USB port or charger (provided the USB output is sufficient).
Check that your charger has sufficient output, the default output of most is only about 100ma (max. output is 500mah).
The cell without the PCB will require LI-Po charge for charging a 1S cell at 0.5 to 1C.
These cells are available on the internet for $6-$15.
You may need to purchase the plug separately.
