Yamaha EF1000iS / EF4500iSE — Storage - battery
Maintenance
For the Yamaha EF1000iS / EF4500iSE, from the Yamaha owner's manual.
Before you start
- Electrolyte is poisonous and dangerous.
Procedure
- Remove the battery.
- Store battery in a cool, dark, dry place and charge it once a month.
- Do not store battery below 0C (30F) or above 30C (90F).
- Disconnect negative lead first, then positive lead when removing.
- Connect positive lead first, then negative lead when installing.
Source: Yamaha owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.