Husqvarna BLi300 Battery

What It Is

The Husqvarna BLi300 is a 36V, 9.4 Ah lithium-ion battery designed to power Husqvarna’s battery-powered lawn mowers, trimmers, blowers, and other outdoor tools. It’s built for medium-to-heavy residential use, offering longer runtime than the smaller BLi200.

Fitment & Compatibility

• Machines: Works with all Husqvarna 36V battery-platform tools, including the LC 347iV, LC 247i, and LC 137i mowers, plus trimmers like the 536LiRX and blowers like the 536iB.
• Check your model: Look for “BLi300” compatibility in your tool’s manual or on the battery compartment label. It also fits older 36V Husqvarna tools (e.g., 536Li series) but not the newer 40V or 80V systems.
• Deck size: No deck size restrictions—fitment depends on the tool’s battery slot, not mower cutting width.
• OEM vs. aftermarket: This is an OEM Husqvarna battery. Third-party replacements exist but may lack the same BMS (battery management system) or fitment guarantee.
• Physical check: Dimensions: 6.5 x 4.3 x 5.1 inches; weight ~5.5 lbs. Confirm your tool’s battery compartment can accept this size (some older models require the BLi100 or BLi200).

Key Things to Know

• Runtime: On a Husqvarna LC 347iV mower, expect 30–45 minutes of cutting (depending on grass height and speed). For trimmers, about 45–60 minutes of continuous use.
• Charging: Use only the Husqvarna QC330 or QC500 charger. Charging time from empty is roughly 60–90 minutes. Do not use generic 36V chargers—they may not communicate with the battery’s BMS.
• Installation: No tools needed—slide the battery into the tool’s slot until it clicks. Remove by pressing the release button. Simple, but ensure contacts are clean.
• Common gotcha: The BLi300 is heavier than smaller batteries. On a mower, it adds noticeable weight to the rear, which can affect maneuverability on slopes. Also, it’s not compatible with Husqvarna’s 40V or 80V systems—double-check your tool’s voltage.

Should You Buy It

If you own multiple Husqvarna 36V tools and need longer runtime than the BLi200 (9.4 Ah vs. 5.2 Ah), the BLi300 is a solid upgrade. It’s best for homeowners with 1/4 to 1/2 acre lots who want to finish mowing on a single charge without swapping batteries. Skip it if your tools are 40V/80V or if you only have a single small tool—the BLi200 is cheaper and lighter for light tasks.