Can Bosch eBike batteries be repaired?

For safety reasons, defective, old or "exhausted" batteries cannot be repaired or refreshed. Lithium-ion batteries are complex, finely tuned systems with a high energy content. In the event of a repair, correct functioning and optimum interaction with the battery management system can no longer be guaranteed. In addition, the tightness of the housing cannot be ensured when the battery is reassembled. For safety reasons, rechargeable batteries must pass extensive series tests in accordance with national and international legislation and normative requirements before they can be placed on the market. These series tests are not feasible for a single repaired battery due to the prescribed number of test samples. This includes, for example, housing tightness testing, as well as overcharging and short-circuit tests. If these tests are not performed, there is a high risk that moisture can enter the battery, for example. In the worst case, this can cause a short circuit and thus creates a hazard. All this can have safety-relevant consequences. For safety reasons, Bosch therefore strongly advises against having repairs carried out.