18V Gardena Hose Reel Compatible Battery 1500mAh Li-ion

Hose got halfway back and the reel just stopped — now it won't retract at all

The motor on the roll-up mechanism draws a sharp current spike when the hose binds or kinks mid-retraction, and the battery management system cuts output to protect the cells — this looks identical to a dead battery but it isn't. Lay the hose out flat to remove any tension, then charge the battery fully before trying again. If the reel still stops at the same point, check that section of hose for a kink that's creating mechanical resistance rather than blaming the battery. A fully charged cell should read between 20V and 21V off the charger — if yours reads below 18V after a full charge cycle, the pack isn't recovering.

Battery charges fine but the auto roll-up feels slower and weaker than it used to

Li-ion cells at this capacity class lose usable power delivery before they lose charge acceptance — the pack will still charge to green on the indicator but internal resistance has climbed enough that the motor runs under-voltage under load. We see this consistently on light-draw motorized devices that sit in a garden shed through winter: shallow cycles and cold storage accelerate capacity fade without any obvious warning sign. To confirm it's the battery and not the motor, watch whether the reel slows progressively from the start of retraction or only bogs down when tension increases near the end. If it's slow from the first meter, the pack is the problem.

Left the hose reel in the shed all winter and now the battery won't take a charge at all

Extended storage in a discharged or near-discharged state drops Li-ion cells below the minimum recovery threshold — most chargers won't initiate a charge cycle on a pack sitting under roughly 12–13V, which reads as a dead or absent battery rather than a flat one. This is the most common failure mode we see on seasonal garden tools that sit unused for four to six months. Some chargers have a recovery or conditioning mode that trickle-charges at low current to bring the pack back above the threshold before switching to normal charge — check whether your charger has that function and hold it there for up to an hour. If the charger still shows no activity after that, measure pack voltage directly at the terminals: anything below 10V on an 18V Li-ion pack is unrecoverable.