Safety notes2.7 Notes on battery operationMD-34A24 Operating Instructions, 08/2023, A5E52427535-AAWARNINGRisk of damage to the device caused by metal objectsKeep unused batteries away from paper clips, coins, keys, nails, screws, or other small metalobjects that could cause the contacts to be bridged. A short circuit between the batterycontacts can cause burns or a fire.WARNINGDamage due to damaged or altered devicesDo not use a damaged or modified battery. Damaged or modified batteries can behaveunpredictably and lead to fire, explosion, or risk of injury.WARNINGRisk of damage to the device caused by charging outside the permissible temperaturerangeObserve all instructions for charging, and never charge the battery outside of thetemperature range specified in the operating instructions. Incorrect charging or chargingoutside of the permissible temperature range can destroy the battery and increase the riskof fire.WARNINGRisk of damage to the device caused by unauthorized customer service centersNever service damaged batteries. All battery maintenance should only be performed by themanufacturer or authorized customer service centers.WARNINGRisk of damage to the device caused by pointed objects or external forcesPointed objects, such as nails or screwdrivers, and external force can damage the battery.An internal short circuit may occur and the battery may burn, smoke, explode, or overheat.WARNINGRisk of damage to the device caused by frostDo not expose the battery to freezing temperatures. The longer the cells are exposed to lowtemperatures, the greater the risk of capacity losses and dangerous cell damage. Forexample, do not store batteries in an unheated garage in the winter.