Who covers the Weather Resistant 800, and for how long?

Deltran, the manufacturer, for three years. Hold on to your receipt, and if a unit ever fails inside that window, reach out to us and we will get the claim moving.

Is this the same charger as the Battery Tender International Waterproof 800?

Yes. Deltran renamed it the Weather Resistant 800; the part number 022-0150-DL-WH, the 800mA output and the IP67 sealing are unchanged. Search results and old manuals under the International name point to this unit.

Can I mount it outdoors permanently at the dock?

That is what it is designed for. Fasten it with the included hardware, run the output lead to the battery, and leave it connected to shore power. Keep the AC plug and outlet weather-protected, since the rating covers the charger and not the outlet it plugs into.

Will it charge a lithium powersports battery?

No. The 022-0150-DL-WH has a lead-acid profile only. A LiFePO4 battery wants different stage voltages and can trip its BMS on a lead-acid charger, so use the Junior Multi-Chemistry 022-0199 instead if the battery is lithium.

How long does 800mA take on a typical powersports battery?

An 18Ah ATV battery drawn down halfway needs about 9Ah returned, which is roughly 11 hours at 0.8 amps plus a few more in absorption. That is fine for a machine that sits between weekends; it is not the tool for reviving a fully dead battery before this afternoon's ride.