Meet the Xantrex Truecharge3 40 Amp 3 Bank 12V Charger — the new version that redefines multi-battery charging for RVs, boats, and commercial power systems. This Lithium-ion compatible charger combines compact design with robust protection, making it the smart choice for ambitious power setups.
Three-bank, high-capacity charging
Deliver up to 40 A of charging current across three independent banks. The automatic 3-stage charging algorithm optimizes charging profiles for faster, safer, and more efficient battery restoration, helping extend battery life whether you’re on the road, at anchor, or at the job site.
Lithium-ion ready plus broad battery compatibility
Unlike its predecessors, Truecharge3 is Lithium-ion battery compatible and also supports Gel, Flooded, and AGM chemistries. This flexibility makes it suitable for a wide range of battery banks and upgrading paths, ensuring safe charging across different technology generations.
Global compatibility and versatile installation
Designed for worldwide use, it accepts 90–265 Vac at 47–63 Hz, with nominal 120 Vac, 230 Vac, or 240 Vac inputs. Its drip-proof design and multi-position mounting offer installation flexibility in diverse environments, from small vessels to recreational vehicles and commercial fleets.
Protection, efficiency, and reliability
- Built-in surge and spike protection on the AC power line for added safety
- Circuit breaker protection and low electrical interference with power factor–corrected multistage charging
- Efficiency greater than 80% for economical operation
- Parallel stack capability — you can pair up to two Truecharge3 chargers for larger installations
Key specifications
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Output: 40 A nominal (charging 14.2–15.5 VDC; float 13.4–13.8 VDC; equalize up to 16 V)
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Input: AC 90–265 Vac, 47–63 Hz (nominal 120/230/240 Vac)
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Battery types: Gel, Flooded, AGM, Lithium-Ion
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Temperature compensation: 3 settings
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Minimum recommended battery bank: 80 Ah
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Operating temperature: 0–60°C (32–140°F)
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Weight: 4.8 lb (2.2 kg)
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Dimensions: 70 × 170 × 250 mm (2.8 × 6.7 × 9.8 in)
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Warranty: Two years
What’s included and compatibility
Model 804-1240-10 with Lithium-ion compatibility built in. Optional remote display panel can augment the easy-to-read readout for convenient monitoring. This charger is designed to integrate seamlessly with existing Truecharge3 systems and can be expanded by paralleling additional units for larger setups.
| Output current (nominal) |
40 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 |
80 Ah |
| Operating temperature |
0—60 degrees C (32—140 degrees F) |
| Weight |
4.8 lb (2.2 kg) |
| Warranty |
Two year |
| Dimensions |
70 x 170 x 250mm (2.8 x 6.7 x 9.8in) |
