Among SRAM's power meter-equipped cranks,
the models that don't use button cells on the spider
but instead take an AA battery in the spindle (crankshaft)
have a strict requirement:
the battery type must be "lithium primary batteries (non-rechargeable only)".
Alkaline batteries, lithium-ion secondary batteries (rechargeable), and
nickel-metal hydride batteries (like Eneloop)
are explicitly stated as incompatible.
It's written somewhere barely anyone reads.
It's a trap that's easy to fall into,
yet the damage cost if you do mess it up is huge, so
↑since a monitor battery comes installed from the factory,
the next battery replacement will
likely be done by the user themselves,
so I'm putting this out there for awareness.
If a shop screws it up,
well, they just have to pay for it.
↑as an example, the compatible "lithium batteries".
↑here's the part number
the models that don't use button cells on the spider
but instead take an AA battery in the spindle (crankshaft)
have a strict requirement:
the battery type must be "lithium primary batteries (non-rechargeable only)".
Alkaline batteries, lithium-ion secondary batteries (rechargeable), and
nickel-metal hydride batteries (like Eneloop)
are explicitly stated as incompatible.
It's written somewhere barely anyone reads.
It's a trap that's easy to fall into,
yet the damage cost if you do mess it up is huge, so
↑since a monitor battery comes installed from the factory,
the next battery replacement will
likely be done by the user themselves,
so I'm putting this out there for awareness.
If a shop screws it up,
well, they just have to pay for it.
↑as an example, the compatible "lithium batteries".
↑here's the part number