TecMate OptiMate Lithium 4s 10A Battery Charger/Maintainer/Tender (TM-275)

The OptiMate Lithium 4s 10A is OptiMate's fastest lithium charger: a 10 Amp, 10-step charger and maintainer for 12.8V/13.2V LiFePO4 performance, race and deep-cycle batteries from 3 to 120Ah. Ampmatic control matches the current to the battery's size and condition, so it's just as safe on a small race battery as it is on a big lithium deep-cycle battery.

A push-button BMS wake-up mode safely brings a battery out of sleep or low-discharge protection, and recovery starts from as low as 0.5V. TUNE mode supplies steady power while you run diagnostics or update vehicle programming, and smart 24/7 maintenance keeps connected circuitry from draining the battery.

For 12.8V/13.2V LiFePO4 (LFP) lithium batteries only. Do not use it on lead-acid batteries or on other lithium chemistries.

Key Features

• 10 Amp Ampmatic charging: adjusts current to match battery size and condition.
• 10-step lithium program: fully automatic, plus a 3-step low-volt save and test.
• BMS wake-up: push-button mode wakes a battery from sleep or deep-discharge protection.
• TUNE mode: stable power for diagnostics, reprogramming, demos, or keeping settings while battery cables are disconnected.
• Battery health test: tests state of health and warns if damage is detected.
• Safe to leave connected: full electronic protection, sparks suppressed, no overcharging, automatic shut-down if short-circuited or disconnected.
• Weatherproof: sealed case with wall mounts, rated to -40°F (-40°C), standby power under 0.5W.

Specifications

• Battery type: 12.8V/13.2V lithium LiFePO4 (LFP)
• Battery size: 3 to 120Ah
• Charge current: 10A (Ampmatic)
• Voltage: 12.8V nominal, 0.5V to 14.4V range
• Charge program: 10 steps, fully automatic
• Input: 100-240V AC, 50-60Hz, high efficiency (CEC listed)
• Leads: 6 ft (180 cm) AC supply lead, 6 ft (180 cm) charge lead with SAE connector
• Operating temperature: down to -40°F (-40°C)
• Weight: 3.2 lb (shipping)

What's Included

• OptiMate Lithium 4s 10A charger (US plug)
• Weatherproof permanent battery lead (O-11)
• Battery clip set (O-04)

Great for: lithium-equipped touring, performance and race motorcycles, plus LiFePO4 deep-cycle batteries in boats and RVs.

Add-Ons (sold separately): Click to add:

• TecMate OptiMate O-11 Fused Weatherproof SAE Battery Lead (5/16"-3/8" Rings) (heavy duty permanent lead for car, truck and big-twin batteries)
• TecMate OptiMate O-04 SAE Battery Charger Clips (spare clip set for posts without a permanent lead)
• TecMate OptiMate O-14 Fused SAE Battery Charger Clips (fused clip set)
• TecMate OptiMate O-43 6 ft Heavy Duty SAE Charger Cable Extension (10 Amp) (extra 6 ft of reach, rated for 10 Amps)
• TecMate OptiMate O-23 15 ft Heavy Duty SAE Charger Cable Extension (10 Amp) (extra 15 ft of reach, rated for 10 Amps)
• TecMate OptiMate O-53 25 ft Heavy Duty SAE Charger Cable Extension (10 Amp) (extra 25 ft of reach, rated for 10 Amps)

Smaller lithium battery? See the OptiMate Lithium 4s 0.8A or the OptiMate Lithium 4s 6A.

Warranty

Backed by OptiMate's 3-year limited replacement warranty.

Part Numbers:
Manufacturer: TM-275
P/N: 3807-0576