EBME Forums Forums Maintenance Technical Assistance Welch Allyn VS100 Vision Screener Battery Replace

Hello,
Did anyone ever replace the battery in a Welch Allyn VS100 Spot Vision Screener? I wanted to reduce the risk of damaging the device, since there is not obvious way to disassemle it. The battery probably costs max 100?EUR, but the Welch Allyn rep is happy to charge 1000?EUR (plus two weeks of waiting, because 'obviously' it has to go to the factory service). Any tips?