# Trojan SIND 04 1685 · Solar battery 4V 1,293Ah

![Trojan SIND 04 1685 · Solar battery 4V 1,293Ah](https://bateriasonline.es/3025-home_default/trojan-sind-04-1685.jpg)

> Trojan SIND 04 1685: 1,293 Ah solar battery, 567×261×610 mm. Compare sizes and equivalents; 14-day returns.

**Category:** [Solar batteries for off-grid systems](https://bateriasonline.es/en/off-grid-solar-batteries) → [Trojan](https://bateriasonline.es/en/trojan-batteries)

- **Canonical URL**: https://bateriasonline.es/en/trojan-sind-04-1685
- **Language**: en
- **Brand**: Trojan
- **Reference**: BOL-TROJAN-SIND 04 1685
- **MPN**: SIND 04 1685
- **Price**: 2.492,04 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Trojan |
| Range | TROJAN INDUSTRIAL ENERGIA RENOVABLE - SMART CAR |
| Application | Solar and off-grid systems |
| Technology | Lead-acid |
| Voltage | 4 V |
| Capacity | 1293 Ah |
| Length | 567 mm |
| Width | 261 mm |
| Height | 610 mm |
| Weight | 167 kg |

## Quick description

Trojan SIND 04 1685: solar battery with 4 V and 1,293 Ah, measuring 567 × 261 × 610 mm.

## Description

## Who the Trojan SIND 04 1685 is for

The Trojan SIND 04 1685 is a deep-cycle battery for off-grid solar systems: it stores the day's energy for use at night and withstands years of charge and discharge cycles. Its capacity is rated at 20 hours (C20); at slower discharge rates the usable capacity is higher.
The SIND 04 1685 belongs to the Trojan TROJAN INDUSTRIAL ENERGIA RENOVABLE - SMART CAR range. [The full range of Trojan batteries](https://bateriasonline.es/en/trojan-batteries)

## Lead-acid technology in the SIND 04 1685

The SIND 04 1685 is a conventional lead-acid battery, with plates immersed in liquid electrolyte. Avoid leaving them discharged, as they sulphate, and charge them with a charger that cuts off or switches to maintenance when finished.

## Trojan SIND 04 1685 vs SIND 04 2145: differences

The real differences between the SIND 04 1685 and the closest Trojan models:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Trojan SIND 04 1685 (this one) | 1,293 Ah | 567 × 261 × 610 | 167 kg |
| Trojan SIND 04 2145 | 1,647 Ah | 691 × 265 × 610 | 211 kg |

- Trojan SIND 04 2145: 354 Ah more, a different case (691 × 265 × 610 mm).

## Equivalents and alternatives to the Trojan SIND 04 1685

We have no other battery with exactly the dimensions and polarity of the SIND 04 1685. Browse the rest of our [solar batteries for off-grid systems](https://bateriasonline.es/en/off-grid-solar-batteries) to compare close options.

## Check this before ordering the Trojan SIND 04 1685

- With 1,293 Ah, the SIND 04 1685 replaces an original battery of that capacity or slightly less.
- Length, width and height of the SIND 04 1685: 567 × 261 × 610 mm.

## Frequently asked questions about the Trojan SIND 04 1685

### SIND 04 1685 or SIND 04 2145: which one suits me?

Compared with the SIND 04 1685, the Trojan SIND 04 2145 has 354 Ah more. With 1,647 Ah, the SIND 04 2145 runs longer between charges than the SIND 04 1685 (1,293 Ah). Mind the space: the SIND 04 2145 measures 691 × 265 × 610 mm.

### How much does the Trojan SIND 04 1685 weigh?

167 kg, with 1,293 Ah of capacity. For reference, the Trojan SIND 04 2145 (1,647 Ah) weighs 211 kg.

### Which regulator do I need?

One with a profile for the battery technology (AGM, gel, flooded or lithium) and temperature compensation. MPPT regulators get more out of the panels.

## Keep comparing: alternatives to the SIND 04 1685

- [All solar batteries for off-grid systems](https://bateriasonline.es/en/off-grid-solar-batteries)
- [Full Trojan catalogue](https://bateriasonline.es/en/trojan-batteries)
- [Trojan SPRE 02 1255](https://bateriasonline.es/en/trojan-spre-02-1255) · 1,130 Ah, 296×176×446 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*