# Genesis batteries

> 6 Genesis EP high-rate TPPL 12V batteries for UPS systems, from 13 to 200 Ah, such as G13EP, G16EP or G26EP. Final price with VAT and 14-day returns.

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## Description

Genesis pure lead batteries for UPS systems that need high power over short discharges, such as the 42 Ah G42EP.

This category brings together GENESIS EP batteries, 12 V pure lead AGM monoblocs. They are the cell pack you typically find inside a professional jump starter and in plenty of equipment that needs bursts of current.
Select by outside dimensions, terminal style and capacity so the new battery drops into the housing and connects without any modification.

## Before you order a replacement

The safest route is to copy the part number printed on the battery you are removing. If it is unreadable, open the unit and note the following:
- **Dimensions** in mm: the compartment of a booster leaves very little spare room.
- **Terminals**: shape and position; a different layout means rewiring.
- **Voltage**: Genesis EP batteries are 12 V; some equipment uses two in series.
- **Capacity in Ah**: keep the original rating to preserve the device's output.

## Matching the battery to the job

Inside a [portable jump starter](https://bateriasonline.es/en/jump-starters-battery-boosters) the battery works in short, very hard bursts. In a [high rate UPS](https://bateriasonline.es/en/high-rate-ups-batteries) it carries the load through an outage until a generator takes over or the system shuts down cleanly. For alarms, lighting or small devices, also look at our [batteries for electronic devices](https://bateriasonline.es/en/alarm-emergency-light-device-batteries). To learn more about the brand, visit the [GENESIS brand page](https://bateriasonline.es/en/genesis-batteries).

## FAQ

### Can I fit a different AGM instead of a Genesis EP?

Only if it matches size, terminals and discharge capability. A generic cycling AGM may fit physically yet fail to deliver the same peak current.

### How do I look after it if the booster sits unused for months?

Recharge after every use and check it every few months. Storing it flat shortens its service life.

### Should I replace both if my unit holds a pair?

Yes. Pairing a new battery with a worn one unbalances the string and drags both down.

### How can I tell the battery is worn out?

If the booster no longer turns over engines it used to start easily, or loses its charge within a few days, the battery has lost capacity. A quick check with a battery tester confirms it.

## Products in this category

| Product | Brand | Price |
|---|---|---|
| [Genesis G13EP · High-rate UPS battery 12V 13Ah](https://bateriasonline.es/en/genesis-g13ep) | Genesis | 166,11 € |
| [Genesis G16EP · High-rate UPS battery 12V 16Ah](https://bateriasonline.es/en/genesis-g16ep) | Genesis | 132,59 € |
| [Genesis G26EP · High-rate UPS battery 12V 28Ah](https://bateriasonline.es/en/genesis-g26ep) | Genesis | 268,05 € |

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