80V 2.5 Ah and 40V 5.0 Ah Lithium-Ion Battery

What It Is

This listing is for two separate lithium-ion batteries: an 80V 2.5 Ah pack and a 40V 5.0 Ah pack. They are designed to power cordless electric lawn mowers, string trimmers, blowers, and other outdoor power equipment that accept these specific voltage platforms.

Fitment & Compatibility

Before buying, confirm your equipment’s voltage and battery platform. This is not a single battery that works in both 80V and 40V tools—it’s two distinct batteries sold together. Check your mower or tool’s manual for the required voltage (e.g., 80V or 40V) and the specific battery model number. These are likely aftermarket or generic replacements, not OEM from a major brand like Greenworks, Kobalt, or Ryobi. Measure the physical dimensions of your current battery bay—especially the latch and terminal layout—to ensure these packs slide in and lock securely. If your mower uses a proprietary battery shape or connector (common with many cordless mowers), these may not fit.

Key Things to Know

• Voltage mismatch risk: The 80V battery will not work in a 40V tool, and vice versa. Using the wrong voltage can damage the tool or battery.
• Capacity & runtime: The 80V 2.5 Ah pack provides moderate runtime for high-power mowers; the 40V 5.0 Ah pack offers longer runtime for lower-voltage tools. Expect shorter runtime than larger Ah OEM batteries.
• Quality concerns: With a 3.6/5 rating from only 17 reviews, build quality and longevity are uncertain. Aftermarket batteries often have shorter lifespans and may lack overcharge protection.
• No charger included: Verify you have a compatible charger for each voltage. Some chargers are voltage-specific.

Should You Buy It

Only buy this if you already own both an 80V and a 40V tool from the same generic platform and need a low-cost backup battery for each. For most users, buying a single, higher-capacity OEM battery (e.g., a 5.0 Ah 80V pack) from your tool’s brand will be more reliable and avoid fitment headaches. The mixed-voltage pair is a niche solution, not a universal upgrade.