The OptiMate DC-DUO charges and maintains a 12V battery from another 12V battery or DC source, no wall outlet needed. Clip its short input lead to your truck, RV or a spare deep-cycle battery, plug the bike into the output, and it will save, recharge and maintain the motorcycle's battery safely, even on the road or off the grid.
It detects lithium (LiFePO4) or lead-acid automatically, wakes a lithium battery's BMS from sleep, and revives batteries from as low as 2V. Built-in protection watches the source battery too: it warns you when the source is getting low and shuts down before it can drain it flat.
Key Features
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No AC power required: powered by 12-16V DC from another battery or vehicle.
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DUO technology: automatically adapts to 12V lead-acid or 12.8V/13.2V LiFePO4 lithium batteries.
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Source battery protection: low-battery warning light and automatic shut-down, and it will not charge from a source below 11V.
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BMS wake-up: revives lithium batteries in sleep or deep-discharge protection mode.
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Recovery and testing: revives a dead battery from as low as 2V and tests state of health.
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Isolated and protected: input isolated from output, sparks suppressed, shut-down on short circuit or disconnection, turns itself off after 1 minute with no battery connected.
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Weatherproof: sealed case with wall mounts, rated to -40°F (-40°C), standby under 0.5W.
Specifications
- Battery types: 12V lead-acid STD, AGM, GEL (6Ah and up) and 12.8V/13.2V LiFePO4 (2Ah and up)
- Charge current: 2A constant current
- Voltage: 12V and 12.8V nominal, 2V to 14.4V range
- Charge program: 6 steps, fully automatic
- DC input: 12-16V, 2.7A max
- Source battery: ideally 1.5 times the Ah of the battery being charged, deep-cycle preferred
- Leads: 1 ft (30 cm) input lead, 6 ft (180 cm) charge lead with SAE connector
- Operating temperature: down to -40°F (-40°C)
- Weight: 1.68 lb (shipping)
What's Included
- OptiMate DC-DUO charger with input lead
- Fused battery clip set for the input (source) battery
- Weatherproof permanent battery lead (O-11)
- Battery clip set (O-04)
Great for: riders on the road, campers and RVs, trailers, boats, off-grid storage, and vehicle-to-vehicle charging for motorcycles, scooters, mowers and cars.
Add-Ons (sold separately): Click to add:
Warranty
Backed by OptiMate's 3-year limited replacement warranty.
Part Numbers:
Manufacturer: TM500V3
P/N: 3807-0339
