How do you charge it?
…with one of these: https://www.competitivecyclist.com/shimano-di2-internal-battery-charger ?
If so, use that to plug it into a PC. The PCE1 connector is only needed if things get really borked. Yours may not be.
How do you charge it?
…with one of these: https://www.competitivecyclist.com/shimano-di2-internal-battery-charger ?
If so, use that to plug it into a PC. The PCE1 connector is only needed if things get really borked. Yours may not be.