Shimano Di2 Battery Replacement (complete strip and rebuild). After my Di2 battery kept losing charge, I stripped down the battery unit and tested and then replaced the 2 Litihium Ion 14430 batteries. This is a guide on how to strip and rebuild the unit. Total cost was £13.99 compared to a new Di2 battery of £135.00. The batteries in the link I have attached have soldering tabs on them in case you are concerned by soldering direct to the battery and I've shown how to test your batteries before buying new ones.
*Please note that i mentioned the batteries are connected in parallel but i should have said they were connected in series*
Batteries
[ Ссылка ]
Tools required
Small flat screwdriver
Solder iron and solder
