MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Maintainer, Trickle and Desulfator

What It Is

The MOTOPOWER MP00205A is a 12V automatic battery charger, maintainer, and desulfator designed for small engines in lawn mowers, tractors, motorcycles, ATVs, and other seasonal vehicles. It keeps batteries topped off during storage and can recover sulfated batteries.

Fitment & Compatibility

• Voltage: Only for 12V lead-acid batteries (standard, AGM, gel, or deep-cycle). Not for 6V or lithium-ion batteries.
• Connector: Comes with SAE-style ring terminals (hardwired to battery) and a quick-connect clamp adapter. Make sure your battery posts are accessible for ring terminal installation.
• Battery Size: Works with batteries from 1.2Ah to 120Ah. Most lawn mower batteries (12V, 20-35Ah) are fine.
• Mower Types: Fits any 12V mower—push, riding, zero-turn, or garden tractor—as long as the battery is accessible. No deck size or brand restrictions.
• What to Check: Verify your battery is 12V and not sealed maintenance-free (unless AGM/gel compatible). Confirm you have a nearby 110V outlet or extension cord for the charger.

Key Things to Know

• Quality: Solid build for the price; automatic switching between bulk, absorption, float, and desulfation modes. No overcharge risk.
• Installation: Very easy—connect ring terminals to battery (red positive, black negative), plug in. Clamps are optional for temporary use.
• Gotcha: The SAE connector is not waterproof; keep connections dry or cover with the included cap when not in use.
• Gotcha: Desulfation mode works best on lightly sulfated batteries; it won’t revive a dead cell or heavily damaged battery.

Should You Buy It

Yes, if you need a reliable, low-cost trickle charger and maintainer for a 12V lawn mower battery during off-season storage. It’s ideal for DIYers who want to extend battery life without spending on a high-end charger. Not for heavy-duty shop use or lithium batteries.