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https://www.supercheapauto.co.nz/p/xtm-4x4-accessories-xtm-40a-dc-dc-2.0-battery-charger/674159.html
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Product Info
The XTM 40A DC-DC 2.0 Battery Charger is a fully automatic dual-input charger for keeping a second battery topped up when your four-wheel drive is parked in camp or working off-grid. Its 40A charging rate and MPPT solar controller accept both DC and solar inputs, and it works with lead-acid, AGM, gel, calcium and lithium (LiFePO4) chemistries without manual adjustment. Push-button battery type selection and memory function mean it learns your preference and applies it at the next charge cycle.
The charger uses a six-stage algorithm to maximise charge speed and battery life: qualification tests the battery's starting voltage (below 2V and it cannot charge); recondition applies a small current to activate the battery and improve efficiency; bulk charge delivers maximum current to minimise time to acceptable voltage; absorption tapers current as voltage rises to prevent overcharging; float and analysis drops current to zero when fully charged and measures voltage stability over 1 minute; maintenance applies periodic pulse currents to hold the battery at about 13.5V and repeat stages 1–5 if voltage drops below 13V.
Pulse mode technology reduces plate oxidation and balances electrolyte consistency for longer service life. Built-in safeguards protect against overcharging, short circuit, overheating and reverse polarity connection. The IP65 rating seals out dust and water spray, making it durable in field conditions.
Features
- Keeps your second battery topped up for extended off-grid trips
- 40A charging rate with MPPT solar input for dual charging sources
- Works with lead-acid, AGM, gel, calcium and lithium (LiFePO4) chemistries
- Six-stage charging profile optimises charge speed and battery life
- Fully automatic operation detects and adjusts to battery type and state
- Accepts DC input 10.8–16V and solar input 13.5–25V
- Protects against overcharging, short circuit, overheating and reverse polarity
- Pulse mode technology reduces oxidation and balances electrolyte for extended battery life
- IP65 rating seals out dust and water spray for field durability
- 12 month warranty
Tech Spec
| CHARGE TYPE | Multi-stage |
|---|---|
| INPUT VOLTAGE DC | Battery - 10.8V - 16V Solar - 13.5V - 25V |
| CUT IN/OUT VOLTAGE WITH INGNITON LEAD DC | 11.5V - 10.8V |
| CUT IN/OUT VOLTAGE WITH NO IGNTION LEAD DC | 13V - 12.4V |
| OUTPUT CURRENT | 40A |
| MINIMUM STARTING VOLTAGE | 2V |
| SOFT START CHARGNING | Yes |
| BULK CHARGE VOLTAGE | Gel - 14.3V Lead Acid - 14.7V AGM - 14.7V Calcium - 15.3V LiFePO4 - 14.4V |
| FLOT CHARGE VOLTAGE | 13.5V |
| FLOAT CHARGE CURRENT | 100mA |
| SUITS BATTERY CAPACITY | 40 - 400AH |
| CASE MATERIAL | Aluminium |
| IP RATING | IP65 |
| MAX OPERATING TEMP | 70°C |
| DIMENSIONS | 194x119.5x37.5mm |
| WEIGHT | 1.65kg |
| WARRANTY | 12 months |
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