# Deka 9C11 · Electric wheelchair battery 6V 250Ah

![Deka 9C11 · Electric wheelchair battery 6V 250Ah](https://bateriasonline.es/3833-home_default/deka-9c11.jpg)

> Deka 9C11: 250 Ah electric wheelchair battery, 297.9×178.3×284.5 mm. Ask for a no-obligation quote.

**Category:** [Electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries) → [Deka](https://bateriasonline.es/en/deka-batteries)

- **Canonical URL**: https://bateriasonline.es/en/deka-9c11
- **Language**: en
- **Brand**: Deka
- **Reference**: BOL-DEKA-9C11
- **MPN**: 9C11
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Deka |
| Range | DEKA LEAD-ACID |
| Application | Electric wheelchairs |
| Technology | Lead-acid |
| Voltage | 6 V |
| Capacity | 250 Ah |
| Length | 297.9 mm |
| Width | 178.3 mm |
| Height | 284.5 mm |
| Weight | 33.11 kg |

## Quick description

Deka 9C11: electric wheelchair battery with 6 V and 250 Ah, measuring 297.9 × 178.3 × 284.5 mm.

## Description

## Where the Deka 9C11 fits

The Deka 9C11 is a deep-cycle battery for electric wheelchairs: sealed, maintenance-free and built to discharge and recharge every day without losing capacity. The 9C11 is fitted in pairs: two 12 V batteries in series give the chair's 24 V.
The 9C11 belongs to the Deka DEKA LEAD-ACID range. [More Deka batteries](https://bateriasonline.es/en/deka-batteries)

## Equivalents and alternatives to the Deka 9C11

We have no other battery with exactly the dimensions and polarity of the 9C11. Browse the rest of our [electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries) to compare close options.

## Deka 9C11 vs 8C11 and GC25: differences

The real differences between the 9C11 and the closest Deka models:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Deka 9C11 (this one) | 250 Ah | 297.9 × 178.3 × 284.5 | 33.11 kg |
| Deka 8C11 | 235 Ah | 298.5 × 177.8 × 292.1 | 30.16 kg |
| Deka GC25 | 235 Ah | 260.4 × 181.1 × 276.4 | 30.84 kg |

- Deka 8C11: 15 Ah less, a different case (298.5 × 177.8 × 292.1 mm).
- Deka GC25: 15 Ah less, a different case (260.4 × 181.1 × 276.4 mm).

## Lead-acid technology in the 9C11

The 9C11 is a conventional lead-acid battery, with plates immersed in liquid electrolyte. In cars without energy management, the 9C11 needs no special registration: just connect it.

## Check this before ordering the Deka 9C11

- Measure the space: the 9C11 takes up 297.9 × 178.3 × 284.5 mm.
- Capacity of the 9C11: 250 Ah; the same as your current battery or slightly more is fine.

## Part numbers and codes for the Deka 9C11

Look for any of these 9C11 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | 9C11 |
|---|---|
| Not to be confused with | Deka 8C11 (235 Ah), Deka 9C12 (228 Ah) |

## Frequently asked questions about the Deka 9C11

### 9C11 or 8C11: which one suits me?

Compared with the 9C11, the Deka 8C11 has 15 Ah less. With 250 Ah, the 9C11 runs longer between charges than the 8C11 (235 Ah). Mind the space: the 8C11 measures 298.5 × 177.8 × 292.1 mm.

### How much does the Deka 9C11 weigh?

33.11 kg, with 250 Ah of capacity. For reference, the Deka 8C11 (235 Ah) weighs 30.16 kg.

### How much range does the Deka 9C11 give in an electric wheelchair?

It depends on weight, terrain and the chair. As a guide, with 250 Ah per battery an average chair covers several kilometres a day; range drops with hills and cold batteries.

## Other options if you are unsure about the 9C11

- [All electric wheelchair batteries](https://bateriasonline.es/en/electric-wheelchair-batteries)
- [More Deka models](https://bateriasonline.es/en/deka-batteries)
- [Deka 8C6V](https://bateriasonline.es/en/deka-8c6v) · 330 Ah, 298.5×177.8×374.7 mm
- [Deka 8L16](https://bateriasonline.es/en/deka-8l16) · 370 Ah, 298.5×173.2×413.3 mm

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