18.5 V 4000 mAh Battery Replacement Battery for Husqvarna for Automower 310, 315, for Gardena Sileno R100Li, R130Li, R160Li, Sileno+ Lawn Robot, Replacement for 5848228-01, 5848228-02

What It Is

This is a 18.5V, 4000 mAh lithium-ion replacement battery designed for Husqvarna Automower 310/315 and Gardena Sileno R100Li, R130Li, R160Li, and Sileno+ robotic lawn mowers. It powers the mower’s cutting, navigation, and charging cycles.

Fitment & Compatibility

• Exact models: Husqvarna Automower 310, 315; Gardena Sileno R100Li, R130Li, R160Li, Sileno+.
• OEM part numbers: Replaces 5848228-01 and 5848228-02.
• Physical check: Measure your existing battery – this is 150mm x 85mm x 30mm (approx.). Ensure your mower’s battery compartment matches these dimensions.
• Voltage & capacity: Must be 18.5V (nominal) and 4000 mAh. Using a different voltage can damage the mower’s electronics.
• Connector type: Verify the plug matches your mower’s harness (typically a 2-pin JST-style connector). If unsure, compare photos or test-fit.

Key Things to Know

• Aftermarket quality: This is a third-party replacement, not OEM. It may have slightly lower cycle life or charge retention than the original Husqvarna battery.
• Installation difficulty: Easy – remove the mower’s top cover, unplug the old battery, plug in the new one, and reassemble. No soldering required.
• Charging compatibility: Works with the original charger that came with your mower. Do not use a fast charger not rated for this voltage.
• Common gotcha: If the mower doesn’t start or charges slowly, check the connector for bent pins or poor contact. Also ensure the battery is fully seated and locked into place.

Should You Buy It

If you need a budget-friendly replacement for a dead or weak battery in a compatible Husqvarna or Gardena robot mower, this is a solid option. It’s not built to OEM specs, but for the price and with good initial reviews, it’s worth trying – especially if you’re handy and don’t mind a slightly shorter lifespan. Avoid if you want guaranteed longevity or have a different mower model.