Trojan 12-AGM · Solar battery 12V 140Ah AGM
Specifications
| Brand | TROJAN |
|---|---|
| Part number | 12-AGM |
| Voltage (V) | 12 |
| Capacity (C20) | 140Ah (c20) |
| Capacity (C5) | 112Ah (c5) |
| Technology | AGM |
| Length | 344.00 mm |
| Width | 172.00 mm |
| Height | 278.00 mm |
€974.70
VAT included
Trojan 12-AGM 12V 140Ah is a solar battery designed for PV systems with daily charge/discharge cycles. Tolerates extreme temperatures well, with low self-discharge during winter shutdowns or between stays at vacation homes.
Why this solar battery?
- Designed for solar systemsoptimised for daily charge/discharge cycles
- Handles extreme temperaturesin technical rooms or outdoor installs
- Minimal self-dischargewhen left idle over winter or holidays
Voltage
12 V
Capacity
140 Ah
Dimensions
344×172×278 mm
Technology
AGM
Weight
45 kg
Model
TROJAN AGM
Solar battery Trojan 12-AGM 140Ah 12V
12VVoltage
140AhCapacity
45kgWeight
For off-grid photovoltaic installations and storage systems, the Trojan 12-AGM stores 140 Ah with AGM technology through daily charge and discharge cycles. Measuring 344 × 172 × 278 mm, it is the direct replacement for off-grid PV systems fitted from the factory with a 140 Ah battery of this format.
- Maintenance-free in off-grid installations.
- Compatible with common MPPT and PWM controllers.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Low self-discharge during the darker months.
Will it fit your current battery tray?
The Trojan 12-AGM is made in the 344 × 172 × 278 mm format and weighs 45 kg. It uses 15 terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.
What the Trojan 12-AGM is for
The Trojan 12-AGM is designed for off-grid photovoltaic installations and storage systems. Size the capacity so as not to discharge more than 50% daily and you will greatly extend its life. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 45 kg and 15 terminals.
Technology inside the Trojan 12-AGM
Within the Trojan catalogue, the 12-AGM is the 140 Ah model designed for this application.
AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly.
Why choose Trojan batteries
Founded in 1925 in California, Trojan invented the golf cart battery and remains the standard in deep-discharge applications that demand thousands of cycles. All the Trojan batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
Official warranty
The Trojan 12-AGM comes with the manufacturer's official warranty against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you.
Usage and maintenance tips
Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Size the installation so as not to discharge the battery more than 50% daily and set the controller to the battery technology.
When you get it and how to return it
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.
BCOM-TROJAN-12-AGM
Data sheet
- Brand
- TROJAN
- Reference
- 12-AGM
- Model
- TROJAN AGM
- Voltage (V)
- 12
- Length
- 344.00 mm
- Width
- 172.00 mm
- Height
- 278.00 mm
- Weight
- 45 Kgs
- Technology
- AGM
- Terminal type
- 15
- Capacity (C20)
- 140Ah (c20)
- Capacity (C5)
- 112Ah (c5)
Specific References
- EAN13
- 8404653001544
- MPN
- 12-AGM
Codes and references Trojan 12-AGM
| Brand | Trojan |
|---|---|
| Manufacturer range | TROJAN AGM |
| Manufacturer part number (MPN) | 12-AGM |
| Also known as | 12AGM · 12 AGM |
| EAN-13 barcode | 8404653001544 |
| Dimensions (length × width × height) | 344 × 172 × 278 mm (344x172x278) |
Recommended accessories
How to change the battery
Guide to replace a cyclic battery (12V 4-30Ah) for UPS, mobility scooter, alarm or backup device. Estimated time 10-15 minutes. Important: discharge residual voltage before handling.
Step 1. Power off and unplug the device
Unplug the device (UPS, scooter, alarm) and leave it off for at least 30 seconds to discharge residual capacitor voltage. Work on an insulating surface.
Step 2. Locate the battery compartment
Usually under the seat (mobility scooter/wheelchair), in the rear module of the UPS, or behind a side panel with screws. Check the device manual for unusual models.
Step 3. Disconnect the negative (−) first
With insulated gloves, remove the negative (−) cable first. Some UPS have protection fuses — note their position before removing.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Typical weight 1-15 kg depending on capacity. Many cyclic batteries are AGM/GEL — keep them upright. Do NOT invert the battery: even sealed, residue may exist.
Step 6. Fit the new battery
Same orientation and type (AGM, GEL or flooded). Polarity must match the device, not a chassis (this is not a car). Make sure terminals do not touch metal parts of the compartment.
Step 7. Connect the positive (+) first
On cyclic devices the order is reversed compared to cars: positive (+) first, negative (−) afterwards. Tighten without forcing — the plastic terminal housing of cyclic batteries damages easily.
Step 8. Initial charge before first use
Cyclic batteries ship at 60-80%. Before first use, connect the device charger for 8-12 hours (or use an AGM/GEL smart charger if available). This avoids short cycles and extends lifespan.
Frequently asked questions
Is the Trojan 12-AGM an AGM battery and what are the benefits of AGM?
Yes. The 12-AGM from Trojan uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for devices with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.
How do I fit the 12-AGM model in my device?
In most devices it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On devices with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How long does the Trojan 12-AGM battery last?
Expected lifespan of the Trojan 12-AGM is 5 to 8 years in mild-climate device use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.
What are the dimensions of the Trojan 12-AGM battery?
Dimensions (length × width × height) are 344×172×278 mm — also written as 344x172x278 mm — following the European DIN standard. Always measure the space in your device before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
Which batteries are equivalent to the Trojan 12-AGM?
Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop devices. See the "Equivalents" section to view recommended options at the same performance level.
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