Recently Shimano has announced new 2nd Generation batteries for their EP801 motor, and it was raised the question whether they are compatible with older E8000 motor. So I searched the Shimano documents and these are my findings:
This is the summary of the current line of batteries, including the new ones:
bike.shimano.com
The compatibility document is 2022-2023_Compatibility_v038_en.pdf:
This document shows the battery compatibility in page C-511:
2023 E-BIKE PRODUCT CATALOGUE Document (SM-2023_E-BIKE_CAT-000-ENG-GB.pdf) has very interesting information:
So summarizing:
![Page13 Battery Life.jpg Page13 Battery Life.jpg](https://www.emtbforums.com/data/attachments/103/103232-c39a4d8683ef78825319ebdfddfa95ac.jpg)
This is the summary of the current line of batteries, including the new ones:
![bike.shimano.com](https://bike.shimano.com/content/dam/productsite/shimano/img/logo/shimano_logo.png)
BATTERY | SHIMANO BIKE-EU | SHIMANO BIKE-EU
To Build Closer Relationships between People, Nature, and Bicycles. We believe in the power of cycling to create a better world as we move forward. We inspire all people to enjoy our products in their everyday lives and where they take them.
![bike.shimano.com](https://bike.shimano.com/content/dam/productsite/shimano/img/icon/android-icon-192x192.png)
The compatibility document is 2022-2023_Compatibility_v038_en.pdf:
This document shows the battery compatibility in page C-511:
- Newer Batteries require new Battery Mount (for example, the new 630W external battery BT-EN604, requires new battery mount BM-EN600)
- Newer Batteries are ONLY compatible with newest motors DU-EP801 and DU-EP600,they are not compatible with older motors like DU-EP800 and of course, DU-E8000
2023 E-BIKE PRODUCT CATALOGUE Document (SM-2023_E-BIKE_CAT-000-ENG-GB.pdf) has very interesting information:
- Page 13 shows the Battery Life information and it states: " After 1,000 charges Holds at least 60% of initial capacity". It has to be noted that it does not states the " 80% charge after 500 cycles" that is included in older documents.
- Page 91 shows the specifications of the new 2nd Generation Batteries
- Page 95 shows the specifications of older 1st Generation Batteries
So summarizing:
- Newer 2nd Generation Batteries require new mount and are intended for the latest motors DU-EP801 and DU-EP600, and are not compatible with older motors.
- Shimano has removed in its documentation the statement where they warrant their batteries to hold 80% after 500 cycles, probably because it has caused too many warranty claims and has costed them too much money..
![Gen 2 Batt Compatibility.jpg Gen 2 Batt Compatibility.jpg](https://www.emtbforums.com/data/attachments/103/103227-9ff7505f6295cbbb0b0fd0f98a537a18.jpg)
![Page 91 2nd Gen Batt Specs 1.jpg Page 91 2nd Gen Batt Specs 1.jpg](https://www.emtbforums.com/data/attachments/103/103228-791fc899846d26446e23ec0ffb2d7b27.jpg)
![Page 91 2nd Gen Batt Specs 2.jpg Page 91 2nd Gen Batt Specs 2.jpg](https://www.emtbforums.com/data/attachments/103/103229-a3ce73935909317c057d9c815ba55483.jpg)
![Page 95 1st Gen Batt Specs 1.jpg Page 95 1st Gen Batt Specs 1.jpg](https://www.emtbforums.com/data/attachments/103/103230-0a2c130f8746da35ba7cf9538ebd0e2e.jpg)
![Page 95 1st Gen Batt Specs 2.jpg Page 95 1st Gen Batt Specs 2.jpg](https://www.emtbforums.com/data/attachments/103/103231-0f7c8ead801a35a1bbaa184a52369c6e.jpg)
![Page13 Battery Life.jpg Page13 Battery Life.jpg](https://www.emtbforums.com/data/attachments/103/103232-c39a4d8683ef78825319ebdfddfa95ac.jpg)
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