# Long WPL28-12TN · UPS battery 12V 28Ah

![Long WPL28-12TN · UPS battery 12V 28Ah](https://bateriasonline.es/1069-home_default/long-wpl28-12tn.jpg)

> Long WPL28-12TN: 28 Ah UPS battery, 166×125.5×176 mm, AGM. Equivalent to Q-Battery 12LSX-9 and Ritar RT12280S. Ask for a no-obligation quote.

**Category:** [UPS batteries](https://bateriasonline.es/en/ups-batteries) → [Long](https://bateriasonline.es/en/long-batteries)

- **Canonical URL**: https://bateriasonline.es/en/long-wpl28-12tn
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-WPL28-12TN
- **MPN**: WPL28-12TN
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | WPL Series |
| Application | UPS systems |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 28 Ah |
| Length | 166 mm |
| Width | 125.5 mm |
| Height | 176 mm |
| Weight | 9.18 kg |

## Quick description

The Long WPL28-12TN is an UPS battery with 12 V and 28 Ah, measuring 166 × 125.5 × 176 mm.

## Description

## Who the Long WPL28-12TN is for

The Long WPL28-12TN is a VRLA AGM battery for UPS and uninterruptible power systems: it stays charged for years waiting for an outage and delivers the energy instantly when it comes. Check dimensions, terminal type (F1 or F2) and capacity so it fits the unit.
The WPL28-12TN belongs to the Long WPL Series range. [More Long batteries](https://bateriasonline.es/en/long-batteries)

## Equivalents and alternatives to the Long WPL28-12TN

Other AGM batteries that fit the WPL28-12TN's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Q-Battery 12LSX-9 | AGM | 28 Ah | 165 × 125 × 175 |
| Ritar RT12280S | AGM | 28 Ah | 165 × 126 × 174 |
| Long WPL28-12T | AGM | 28 Ah | 166 × 125.5 × 176 |
| Long WPL28-12TM | AGM | 28 Ah | 166 × 125.5 × 176 |

## Long WPL28-12TN vs WPL36-12 and WPL34-12N: differences

How the WPL28-12TN compares with Long batteries of similar size and capacity:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Long WPL28-12TN (this one) | 28 Ah | 166 × 125.5 × 176 | 9.18 kg |
| Long WPL36-12 | 36 Ah | 197 × 131 × 180 | 11 kg |
| Long WPL34-12N | 34 Ah | 197 × 131 × 168 | 10.3 kg |

- Long WPL36-12: 8 Ah more, a different case (197 × 131 × 180 mm).
- Long WPL34-12N: 6 Ah more, a different case (197 × 131 × 168 mm).

## AGM technology in the WPL28-12TN

The WPL28-12TN is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the WPL28-12TN can be fitted in the boot or under a seat with no risk of spills.

## Check this before ordering the Long WPL28-12TN

- Measure the space: the WPL28-12TN takes up 166 × 125.5 × 176 mm.
- With 28 Ah, the WPL28-12TN replaces an original battery of that capacity or slightly less.

## Frequently asked questions about the Long WPL28-12TN

### WPL28-12TN or WPL36-12: which one suits me?

Compared with the WPL28-12TN, the Long WPL36-12 has 8 Ah more. With 36 Ah, the WPL36-12 runs longer between charges than the WPL28-12TN (28 Ah). Mind the space: the WPL36-12 measures 197 × 131 × 180 mm.

### How much does the Long WPL28-12TN weigh?

9.18 kg, with 28 Ah of capacity. For reference, the Long WPL36-12 (36 Ah) weighs 11 kg.

### Which battery is equivalent to the Long WPL28-12TN?

Only other AGM batteries with its dimensions and polarity: Q-Battery 12LSX-9, Ritar RT12280S and Long WPL28-12T. Neither an EFB nor a conventional battery replaces the WPL28-12TN.

### Which charger does the Long WPL28-12TN need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

## Keep comparing: alternatives to the WPL28-12TN

- [Other uPS batteries](https://bateriasonline.es/en/ups-batteries)
- [The whole Long range](https://bateriasonline.es/en/long-batteries)
- [Q-Battery 12LSX-9](https://bateriasonline.es/en/q-battery-12lsx-9) · 28 Ah, 165×125×175 mm
- [Ritar RT12280S](https://bateriasonline.es/en/ritar-rt12280s) · 28 Ah, 165×126×174 mm

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