# Rechargeable 12V 4Ah Gel Lead-Acid Battery COSI CSB-124 GEL for UPS, Alarm and Backup Power

**URL:** https://aio.lv/en/product--cosi-csb-124-gel--10129421
**Data updated:** 2026-02-12 21:55 (EET)
**Category:** Batteries
**Manufacturer:** COSI
**Manufacturer code:** CSB-124 GEL
**EAN:** 3100001375149
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.85 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 12.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cosi-csb-124-gel--10129421

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 02.07.2026 | free |
| Pickup points | 07.07.2026 | 1.89 EUR |
| Courier delivery to door | 07.07.2026 | 4.99 EUR |

## Summary description

12V 4Ah gel lead-acid battery COSI CSB-124 GEL is a sealed, rechargeable power source designed for UPS systems, alarm panels, emergency lighting and small backup applications. The maintenance-free gel construction provides reliable discharge and long shelf life, suitable for indoor installations and cyclic or standby use where compact, spill-proof power is required.

## Long description

The Rechargeable 12V 4Ah Gel Lead-Acid Battery COSI CSB-124 GEL is a sealed, maintenance-free energy source designed for small backup and standby applications. Its gel electrolyte formulation prevents leakage and allows installation in confined indoor spaces. The battery delivers stable 12V output and a nominal capacity of 4Ah, making it suitable for UPS modules, alarm systems, emergency lighting and other compact power installations that require a spill-proof, rechargeable supply.
Advantages
This gel lead-acid battery offers maintenance-free operation and safe indoor use thanks to its sealed, valve-regulated design. The gel electrolyte reduces the risk of stratification and provides better deep-discharge recovery compared with some flooded designs. Its compact size and consistent voltage output enable straightforward replacement or integration into existing small UPS, alarm and backup setups. The construction supports both standby and cyclic use, and the sealed design minimises the need for ventilation and routine maintenance.
Suitable for
Uninterruptible Power Supplies (small UPS units)
Burglar and fire alarm control panels
Emergency and exit lighting systems
Backup power for telecommunications and network devices
Portable equipment requiring sealed 12V power
Key specifications
Nominal voltage: 12 V
Nominal capacity: 4 Ah
Electrolyte type: gel (sealed, valve-regulated)
Design: rechargeable lead-acid
Mounting orientation: installable in upright and some confined indoor positions (follow manufacturer guidance)
Usage modes: standby and cyclic operation supported
Operating temperature range: suitable for typical indoor temperatures (see device documentation for exact limits)
Maintenance: maintenance-free, no regular water topping required
How to use
Install the battery in accordance with the equipment manufacturer’s instructions and ensure correct polarity when connecting to UPS units, alarm panels or other devices. For initial use, charge the battery using a compatible charger or the host device’s charging circuit until fully charged before placing it into service. Observe safe handling: avoid short circuits, ensure secure terminal connections, and place the battery on a stable, non-conductive surface in a dry, ventilated indoor location. Do not open, puncture or expose the battery to flames or high heat.
Usage recommendations
For long service life, store and operate the battery at moderate indoor temperatures and keep it fully charged during extended storage or standby use. Periodically check voltage and charge state when used in backup systems, and replace the battery when capacity noticeably declines to maintain reliable backup performance.

## FAQ

### How much does the 12V 4Ah Gel Lead-Acid Battery COSI CSB-124 GEL cost, and is it available for purchase?

The price is 14.85 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 02.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All COSI products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized COSI service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/10129421/52365944_large.webp