Shimano Battery compatibility ?

[frazerrobbo]

Hey folks, does anyone know if the Shimano E6010 STEPS batteries will fit the E7000 or E8000 systems. I've noticed the E8010 (500wH) and E8014 (418wH) external batteries are much more expensive.

Anyone tried it ?

Cheers,
Fraz

image below of the E6010 battery.