# Solar battery Trojan 8V-GEL 8V 140Ah GEL

![Solar battery Trojan 8V-GEL 8V 140Ah GEL](https://baterias.com/679-home_default/battery-trojan-8v-gel-8v-140ah.jpg)

> Trojan 8V-GEL solar battery 8V 140Ah GEL. Dimensions 262×181×276 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-8v-gel-8v-140ah
- **Language**: en-GB
- **Brand**: TROJAN
- **Reference**: BCOM-TROJAN-8V-GEL
- **MPN**: 8V-GEL
- **Price**: 841,10 €
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | TROJAN |
| Reference | 8 V-GEL |
| Model | TROJAN GEL |
| Voltage (V) | 8 V |
| Largo | 262 mm |
| Ancho | 181 mm |
| Alto | 276 mm |
| Peso | 32 kg |
| Tecnología | GEL |
| Terminal type | 6 |
| Capacity (C20) | 140 Ah (c20) |
| Capacity (C5) | 114 Ah (c5) |

## Quick description

**Trojan 8V-GEL 8V 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 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
8 V

⚡ Capacity
140 Ah C20

📏 Dimensions
262×181×276 mm

⚙️ Technology
GEL

⚖️ Weight
32 kg

🏷️ Model
TROJAN GEL

## Description

## Solar battery Trojan 8V-GEL 140Ah 8V

8*V* Voltage
140*Ah* Capacity
32*kg* Weight

For off-grid photovoltaic installations and storage systems, the **Trojan 8V-GEL** stores **140 Ah** with GEL technology through daily charge and discharge cycles. Its 262 × 181 × 276 mm make it the exact replacement for the 140 Ah battery fitted as standard to many off-grid PV systems.
- Low self-discharge during the darker months.
- GEL: excellent resistance to deep discharge and long cycle life.
- Compatible with common MPPT and PWM controllers.
- Maintenance-free in off-grid installations.

### What the Trojan 8V-GEL is for

The Trojan 8V-GEL 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 32 kg and 6 terminals.

### Technology inside the Trojan 8V-GEL

Trojan builds the 8V-GEL to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.
GEL technology fixes the acid in a solid gel. That removes maintenance and leaks and gives very long cycle life, in exchange for slightly slower recharging and lower peak current than an AGM.

### Size, terminals and hold-down of the Trojan 8V-GEL

In terms of format, the Trojan 8V-GEL measures 262 × 181 × 276 mm (length × width × height) and weighs 32 kg. It uses 6 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.

### Trojan: the maker behind the 8V-GEL

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.

### Care and maintenance

Size the installation so as not to discharge the battery more than 50% daily and set the controller to the battery technology. GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte.

### Manufacturer's warranty

The Trojan 8V-GEL 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.

### When you get it and how to return it

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 and Canary 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 Trojan 8V-GEL a GEL battery? What is GEL used for?

Yes, this model is a GEL battery: sealed lead-acid where the electrolyte is in gel form. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). Requires a GEL-specific smart charger — max charge voltage ~14.1 V (vs 14.4-14.7 V for AGM). Lifespan 6-10 years.

### How do I fit the 8V-GEL 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.

### What is the service life of the 8V-GEL model?

Expected lifespan of the Trojan 8V-GEL is 6 to 10 years in cyclic use (marine, caravan, solar) with controlled discharges. 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 size is this battery?

Dimensions (length × width × height) are 262×181×276 mm — also written as 262x181x276 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.

### What are the equivalents of the 8V-GEL model?

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.


## Reviews

- **Average rating**: 4.81 / 5 (11 reviews)

## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries.

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

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*baterias.com — Automotive batteries · 2026-10-06*