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Index: 5903940331270
EAN: 5903940331270
Capacity: 4000mAh
Voltage: 18V
Cells type: li-ion
Condition: New
Warranty: 12 months
No memory effect, the battery can be recharged at any time, whether the energy reserve is 50% or 90% used
A slight degree of self-discharge after 30 days of non-use, the battery still has over 96% of its nominal capacity, while in NiCd / NiMH batteries the capacity loss is about 25%, so after about 4 months, traditional batteries will self-discharge, while the battery Bosch lithium-ion will have over 85% of its capacity.


100% compatible with all new and existing Bosch Professional 18V power tools and chargers
Thanks to the latest cell technology and intelligent battery management, they achieve 87% more energy.
The new COOLPACK 2.0 housing has been designed to close individual cells even more precisely and to dissipate heat even better. This technology has made it possible to achieve 135% longer battery life compared to batteries with the previous CoolPack technology.
Copper cell connectors provide less drag and prevent loss of power. In addition, copper releases heat faster, preventing the cells from overheating.
Optimal heat dissipation thanks to the TPE sheet that closes all gaps between the cells and the side casing.
The side protection block and rubber caps protect the battery against any mechanical damage, the battery remains fully functional and functional even after a fall from a height of 3 meters.


Don't be surprised with a discharged battery! You can check the battery level at any time using the convenient indicator.
Data sheet
Specific References
1) The accurate working temperature
Batteries suffer very badly at extreme temperatures. If you want to extend the life of your battery, you should avoid overloading it too much. If your battery works for a very long time, that's why it is probably very hot. It is wise to pull it out of the device and wait 10-15 minutes until it cools down.
2) Battery overcharge
If you want your batteries to have a very long life, you should also avoid their deep discharge. If during daily work on the battery you see a fairly large decrease in the efficiency of the device powered by the battery, you should stop its work as soon as possible and connect the battery to the charger.
3) Battery rest
You must also remember that the discharged battery for proper operation needs about 5 minutes of "free charging" before connecting to ”normal” charging. During "free charging" our battery temperature will drop significantly which will obviously have a very beneficial effect during subsequent charging.
4) Appropriate storage of the battery
The life of batteries is also greatly influenced by their proper storage. If you are not going to use the battery in the near future, it is worth charging it for the level 60-70%. Charged battery should be put in a safe place with temperature above zero.
5) Battery formatting
If you have batteries based on popular NiCd cells, you should also remember that it is possible that the so-called "memory effect" may occur. Batteries with NiCd cells should be discharged at least once every three cycles, and then charged to 100% level. Through these actions you will keep the maximum capacity of the battery.
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Capacity: 4000mAh
Voltage: 18V
Cells type: li-ion
Condition: New
Warranty: 12 months
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