Meet the Xantrex Truecharge3 20 Amp 3 Bank 12V Charger—a compact, high-efficiency multi-bank charger designed to power three independent 12V battery banks with precision and reliability. Built for global use, it supports Lithium-ion batteries alongside Gel, Flooded, and AGM chemistries for boats, RVs, fleets, and commercial applications.
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Three-bank design: Provides dedicated output for three independent 12V battery banks, so each bank charges separately without cross-interference.
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Output current: 20 A nominal output to deliver robust charging in a compact footprint.
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Three-stage charging: Automatic charging profile with Charge 14.2–15.5 VDC, Float 13.4–13.8 VDC, and Equalize at 16 V for optimal battery health.
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Global input compatibility: AC input 90–265 Vac, 47–63 Hz; nominal 120 Vac, 230 Vac, 240 Vac for worldwide operation.
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Battery types supported: Gel, Flooded, AGM, and Lithium-Ion batteries.
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Flexible connections: Three positive terminals and one negative terminal for versatile battery configurations.
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Protection and reliability: Built-in surge and spike protection on the AC power line plus circuit breaker protection.
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Efficiency and quiet operation: Greater than 80% efficiency with low electrical interference and power-factor corrected multistage charging.
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Drip-proof mounting: Drip-proof design enables mounting in multiple orientations for flexible installation in tight spaces.
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Temperature compensation: Three settings to optimize charging from 0 to 60°C (32–140°F).
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Expandability: Parallel stacking allows scaling capacity by adding up to two additional chargers for larger systems.
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Compact and rugged: Weight 4.8 lb (2.2 kg); dimensions 70 x 170 x 250 mm (2.8 x 6.7 x 9.8 in).
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Remote monitoring: Optional 12V remote display panel available for easy status viewing on 12V models.
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Minimum bank size: Suitable for a minimum recommended bank size of 40 Ah.
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Warranty: Two-year warranty.
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Operating temperature: 0–60°C (32–140°F).
The Truecharge3 protects and extends battery life across marine, RV, and commercial installations by delivering precise, per-bank charging with safe protections. Its global input range means you can rely on it worldwide, while its Lithium-ion compatibility and other chemistries give you flexibility for current or future battery needs. With a compact footprint and lightweight design, installation is straightforward in tight spaces, and parallel stacking lets you scale capacity as your system grows. The three-stage charging profile preserves battery health, improves charging efficiency, reduces maintenance, and supports reliable power where you need it most.
| Output current (nominal) |
20 A |
| Charge |
14.2 — 15.5 Vdc |
| Float |
13.4 — 13.8 Vdc |
| Equalize |
16 V |
| DC output connections |
Three |
| AC input voltage |
90-265 Vac; 47-63 Hz; 120 Vac, 230 Vac, 240 Vac nominal |
| Temperature compensation |
Three settings |
| Charger efficiency |
Greater Than 80 percent |
| Battery type |
Gel, Flooded, AGM, Lithium-Ion |
| Minimum recommended battery bank size |
40 Ah |
| Operating temperature Operating temperature |
0—60 degrees C (32—140 degrees F) |
| Battery connection |
Three positive terminals, One negative terminal |
| Weight |
4.8 lb (2.2 kg) |
| Warranty |
Two year |
| Dimensions |
70 x 170 x 250mm (2.8 x 6.7 x 9.8in) |
