# Solar battery Trojan 31-AGM SV 12V 100Ah AGM

![Solar battery Trojan 31-AGM SV 12V 100Ah AGM](https://baterias.com/686-home_default/battery-trojan-31-agm-sv-12v-100ah.jpg)

> Trojan 31-AGM SV solar battery 12V 100Ah AGM. AGM RELIANT range. Dimensions 325×173×238 mm. Designed for PV systems with daily cyclic loads.

**Category:** [Batteries for Solar Applications](https://baterias.com/gb/batteries-for-solar-applications) → [TROJAN](https://baterias.com/gb/trojan)

- **Canonical URL**: https://baterias.com/gb/battery-trojan-31-agm-sv-12v-100ah
- **Language**: en-GB
- **Brand**: TROJAN
- **Reference**: BCOM-TROJAN-31-AGM SV
- **MPN**: 31-AGM SV
- **Price**: 607,90 €
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | TROJAN |
| Reference | 31-AGM SV |
| Model | TROJAN AGM RELIANT |
| Voltage (V) | 12 V |
| Largo | 325 mm |
| Ancho | 173 mm |
| Alto | 238 mm |
| Peso | 30 kg |
| Tecnología | AGM |
| Terminal type | 6 15 |
| Capacity (C20) | 100 Ah (c20) |
| Capacity (C5) | 82 Ah (c5) |

## Quick description

**Trojan 31-AGM SV 12V 100Ah** 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 systems** optimised for daily charge/discharge cycles
- **Handles extreme temperatures** in technical rooms or outdoor installs
- **Minimal self-discharge** when left idle over winter or holidays

🔌 Voltage
12 V

⚡ Capacity
100 Ah C20

📏 Dimensions
325×173×238 mm

⚙️ Technology
AGM

⚖️ Weight
30 kg

🏷️ Model
TROJAN AGM RELIANT

## Description

## Solar battery Trojan 31-AGM SV AGM Reliant 100Ah 12V

12*V* Voltage
100*Ah* Capacity
30*kg* Weight

For off-grid photovoltaic installations and storage systems, the **Trojan 31-AGM SV** from the **AGM Reliant** range stores **100 Ah** with AGM technology through daily charge and discharge cycles. It replaces the original battery without adaptation in off-grid PV systems with a 325 × 173 × 238 mm format: same 100 Ah capacity.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
- Optimised for daily charge and discharge cycles.
- Good tolerance to extreme temperatures.
- Long life on float and moderate cycling.

### Will it fit your current battery tray?

It has external dimensions of 325 × 173 × 238 mm and weighs 30 kg. It uses 6 15 terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

### What the Trojan 31-AGM SV is for

With 100 Ah, the Trojan 31-AGM SV stores the energy from your panels for the night and cloudy days. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 30 kg and 6 15 terminals.

### The Trojan 31-AGM SV: AGM Reliant range and AGM technology

Within the Trojan catalogue, the **AGM Reliant** series groups the references designed for this use. The 31-AGM SV is the 100 Ah model of that family, with the same performance as its siblings in other sizes.
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

Trojan Battery is the world reference in deep-cycle batteries: golf carts, cleaning machines, aerial platforms and solar systems rely on its T2 technology and longevity. We guarantee that every Trojan arrives new, charged and with the manufacturer's full warranty.

### Official warranty

The Trojan 31-AGM SV 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. In the darker months, check the voltage periodically and avoid full discharges.

### Shipping, delivery and returns

Orders placed **before [[ks:cutoff]]** 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 **[[ks:return_days]] 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.

## Frequently asked questions

### Is the 31-AGM SV model AGM? What does this technology offer?

Yes. The 31-AGM SV 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 31-AGM SV 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 our blog. 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 31-AGM SV battery last?

Expected lifespan of the Trojan 31-AGM SV 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 measurements of the 31-AGM SV model?

Dimensions (length × width × height) are 325×173×238 mm — also written as 325x173x238 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 31-AGM SV?

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.


## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2015.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-10-15*