Shimano 2nd Generation Batteries

Spiff

Active member
Feb 27, 2019
412
236
Earth
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:

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 Page 91 2nd Gen Batt Specs 1.jpg Page 91 2nd Gen Batt Specs 2.jpg Page 95 1st Gen Batt Specs 1.jpg Page 95 1st Gen Batt Specs 2.jpg Page13 Battery Life.jpg
 
Last edited:

AusE

Member
Dec 3, 2019
71
20
Australia
So another reason to ditch shimano, no backwards compatibility. They obviously know their 1st gen bt-8035 has issues but they continue to ignore it.
 

Strindberg

Active member
Sep 24, 2021
97
58
Strasbourg, France
Does anyone know how much longer Shimano will sell Gen 1 batteries >>> BT-E8010 and BT-E8016 ?

My three BT-E8010s with 107 charges each, 3 years / 33,000 km
now only allow 46 to 53 km with Eco High in the flat valley along the River Rhine.

I ask me if I should still quickly buy new batteries which are just as bad...
and this just after a few weeks of use and zero warranty service from Shimano.
The 60% after 1000 cycles is bullshit pure.

( My Husqvarna GT2 is so good as travelbicycle, but not compatible with Gen2.
Anyway, my next will be a Riese & Müller Super Charger 750 Wh Dual with Bosch )

till Fårö.jpg
 
Last edited:

rpurdie

Member
Jan 12, 2023
39
26
UK
Does anyone know if the battery mounts for the new battery will fit on an older frame? I have a bike with E8035/E8000 but given the motor is broken and the batteries failing, I'm wondering if I can swap the system out for the newer motor and battery in due course?
 

steve_sordy

Wedding Crasher
Nov 5, 2018
8,384
8,614
Lincolnshire, UK
Does anyone know if the battery mounts for the new battery will fit on an older frame? I have a bike with E8035/E8000 but given the motor is broken and the batteries failing, I'm wondering if I can swap the system out for the newer motor and battery in due course?
I don't know about the mounts, but I'm pretty sure that the cabling is different e8000 vs EP8. It can be done though, there are conversion kits you can buy; I saw a reference to it on this Forum.
 

rpurdie

Member
Jan 12, 2023
39
26
UK
I don't know about the mounts, but I'm pretty sure that the cabling is different e8000 vs EP8. It can be done though, there are conversion kits you can buy; I saw a reference to it on this Forum.
Cabling on the e8000 can be changed or converted to what the EP800 needs and I'm guessing the same cabling works on the EP801. That bit is easier, it is the frame mounts that would make or break things for this new generation.
 

EMTB Forums

Since 2018

The World's largest electric mountain bike community.

521K
Messages
25,639
Members
Join Our Community

Latest articles


Top