# Batteries Leyland Constructor T45 1998
**baterias.com** · Year
**URL:** https://baterias.com/gb/batteries-for-truck/leyland/constructor/t45/1998

> baterias.com > Truck Batteries > Leyland > Constructor > T45 > 1998

## Verified selection

- Application: Truck Batteries
- Make: Leyland
- Model: Constructor
- Engine: T45
- Year: 1998
Batteries for your vehicle Below are the batteries we have obtained for your vehicle. Keep in mind that for the same vehicle, the manufacturer may install different batteries depending on the vehicle's engine, standard equipment, etc. First of all Check the dimensions of the battery ＋ The dimensions encompass the entire volume of the battery: the height includes terminals, and the width/length includes edges and protrusions. If you measure the base of the battery, add a few millimeters for any protrusions on the base or top. In second place Location of the positive pole ＋ Check the positive terminal on the battery itself. Its location is independent of how it's mounted in the vehicle; don't rely on what you see from the hood or the driver's seat. Third Start-Stop and compatible technology ＋ If your vehicle has a Start-Stop system, the battery must be compatible (EFB or AGM).An AGM battery is always replaced with another AGM battery.An EFB battery can be replaced with either an EFB or an AGM (superior technology). Any questions? Contact us via WhatsApp using the icon on this page and, if possible, attach a photo of your battery. Perfect batteries for your car at an exceptional price Free returns if you choose the wrong battery Guides and tips for installing the battery safely Express shipping service to receive your battery as soon as possible

## Technical specifications

- Capacity (Ah): 125 Ah
- Cranking (CCA): 720 A
- Voltage: 12 V V
- Case size: WOR7
- Compatible batteries: 2

## Compatible batteries (1)

| Make | Model | Ref. | Ah | CCA | Price | URL |
|---|---|---|---|---|---|---|
| VARTA | VARTA J1 | J1 | 125 Ah | 720 A | 119.74 EUR | https://baterias.com/gb/battery-varta-j1-12v-125ah-720a |
## Frequently asked questions

### What battery does the Leyland Constructor T45 use?

The Leyland Constructor T45 may use different batteries depending on engine and equipment. We found 1 compatible batteries. Check dimensions and positive terminal position before purchasing.

### Can I install a higher capacity battery in my Leyland Constructor T45?

Yes, you can install a higher capacity (Ah) battery as long as the physical dimensions fit your Leyland Constructor T45 battery compartment and the positive terminal position matches.

### How long does a Leyland Constructor T45 battery last?

A conventional battery in the Leyland Constructor T45 lasts between 4 and 6 years under normal conditions. Factors that reduce lifespan: frequent short trips, extreme temperatures, many electrical consumers, and leaving the vehicle parked for long periods.

### How to change the battery in a Leyland Constructor T45?

To change the battery: 1) Disconnect negative (−) first. 2) Disconnect positive (+). 3) Remove old battery. 4) Place new one respecting polarity. 5) Connect positive first, then negative. If unsure, consult a professional.

### How do I find the right battery for my vehicle?

Use the search tool by selecting your vehicle's make and model. Our system automatically filters compatible part numbers verified by our technicians. If you have any questions, contact us via WhatsApp.

### What warranty do the batteries have?

As they are consumable items, car batteries have a 2-year warranty, truck batteries a 1-year warranty, and all others (motorcycle batteries, cyclic batteries, etc.) a 6-month warranty. If a battery has a manufacturing defect, it will be replaced at no cost to the user.

### How long does it take for the battery to arrive?

Under normal circumstances, batteries usually arrive within 1 to 2 days of ordering. However, there are some cases where delivery may take a little longer: peak seasons (Black Friday, Christmas, etc.), palletized shipments, occasional stock shortages, etc.

## Guides

### How to change the battery of the truck Leyland Constructor T45

Guide to safely replace the battery (or the pair of batteries in 24 V systems) of the Leyland Constructor T45. Estimated time: 30-60 minutes. Tools: 12-17 mm wrenches, gloves and safety glasses. Warning: truck batteries weigh 25-55 kg each. If the vehicle has a battery master switch (isolator), engage it before starting.

1. **Prepare the vehicle** — Park on flat, firm ground, apply the handbrake, place wheel chocks, and if the truck has a battery disconnect switch (master switch), engage it. Switch off all electrical loads.
2. **Locate the battery box** — The box is usually on the chassis side, behind the cab, or under it. Many trucks carry two batteries in series (24 V) or in parallel (higher capacity). Identify the configuration before touching anything.
3. **Open the box and inspect the connections** — Open the battery-box lid. Cables are much thicker than in a car; terminal bolts are usually 12-17 mm. Identify the ground cable (to chassis) and the bridge cable between batteries if there are two.
4. **Mark the layout before dismantling** — Take a photo or tag the cables with tape. In a series setup (24 V): battery 1 negative goes to chassis ground; battery 1 positive bridges to battery 2 negative; battery 2 positive feeds the system.
5. **Disconnect all grounds first** — Disconnect the ground cable (negative to chassis) and, if there are two batteries, the bridge cable between them. This order is critical: while any negative remains connected, an accidental positive-to-chassis contact causes a massive short circuit.
6. **Disconnect the positives** — With every ground isolated, disconnect the positive cables. Move them aside and cover them with a cloth or insulating tape so they cannot reconnect.
7. **Remove the old batteries** — Release the clamps, rods or retaining bars. Truck batteries weigh 25-55 kg each: wear gloves and goggles, ask for help or use a lifting device. Never lift them by the terminals.
8. **Install the new ones and reconnect in reverse order** — Clean the box with a brush or dry cloth and neutralise acid residue with diluted baking soda if there is sulphation. Fit the new batteries matching the original orientation. Connect positives first, then the bridge cables (if any), and the ground cables to chassis last. Apply petroleum jelly or anti-corrosion grease on the terminals.
9. **Re-enable and verify** — Close the box, re-engage the disconnect switch if present, and check the voltage with a multimeter (12.6-12.8 V at rest per battery, or 25.2-25.6 V total on 24 V systems). Start the truck and check tachograph, lights, HVAC and other systems. If the tachograph or ECM requires recalibration, go to an authorised service centre.

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