# Sealed Gel 12V Battery COSI CSB-1228 GEL 28Ah, VRLA rechargeable 28 Ah

**URL:** https://aio.lv/en/product--cosi-csb-1228-gel--10634249
**Data updated:** 2026-02-12 22:01 (EET)
**Category:** Batteries
**Manufacturer:** COSI
**Manufacturer code:** CSB-1228 GEL
**EAN:** 3100001461316
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 92.47 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 76.42 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cosi-csb-1228-gel--10634249

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.89 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Sealed gel 12V rechargeable battery COSI CSB-1228 GEL with 28 Ah nominal capacity. VRLA design requires no maintenance and provides leak-proof, vibration-resistant power for backup systems, alarm panels, UPS units, small solar setups and mobility devices. Suitable for indoor installations; offers long standby use and reliable cyclic performance within specified operating conditions.

## Long description

Sealed Gel 12V rechargeable battery COSI CSB-1228 GEL provides a stable 12 V output with a nominal capacity of 28 Ah in a valve-regulated lead-acid (VRLA) gel format. The sealed gel electrolyte and maintenance-free design make this battery suitable for indoor installations where leak resistance and vibration tolerance are required. It is designed for standby power, cyclic use within manufacturer conditions, and applications where a reliable, compact 12 V energy source is needed.
Advantages
The gel electrolyte and VRLA construction deliver leak-proof performance and reduced risk of acid spills, enabling safe indoor use and varied mounting orientations. The maintenance-free design eliminates the need for periodic water topping. The battery offers stable output under standby conditions and predictable cyclic behaviour when used according to recommended charge and discharge parameters. Its vibration resistance and sealed case enhance longevity in environments with mechanical stress.
Suitable for
 Uninterruptible power supply (UPS) systems for short-term backup
 Alarm and security panels
 Small off-grid or auxiliary solar systems
 Mobility devices and medical equipment with appropriate specifications
 Telecom standby modules and monitoring equipment
Key specifications
 Nominal voltage: 12 V
 Nominal capacity: 28 Ah
 Electrolyte type: Gel (VRLA)
 Design: Sealed, maintenance-free
 Mounting: Suitable for horizontal or specified alternative orientations
 Performance: Designed for standby and cyclic operation within recommended parameters
 Operating environment: Indoor use; avoid prolonged exposure to extreme temperatures
How to use
Install the 12 V gel battery in a well-ventilated, dry indoor location on a flat, stable surface and secure it according to the equipment manufacturer’s instructions. Connect to the system using correct polarity and suitable terminal connections; ensure charging equipment is compatible with gel-type VRLA chemistry and configured for the battery’s nominal voltage and capacity. Avoid deep discharges and follow the recommended charge voltage and current limits from your system documentation to maximize service life. For cyclic use, follow charge/discharge profiles appropriate for gel batteries.
Usage recommendations
Store and operate the battery within the manufacturer’s recommended temperature range to preserve capacity and service life. Use a charger with gel/VRLA settings or an adjustable charger set to the appropriate float and cycle voltages for gel batteries. Periodically inspect terminals for secure connections and clean any corrosion with appropriate precautions. Replace the battery when capacity falls below acceptable levels for your application.

## FAQ

### How much does the COSI CSB-1228 GEL 12V 28Ah Gel Battery cost, and is it available for purchase?

The price is 92.47 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 06.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can COSI CSB-1228 GEL 12V 28Ah Gel Battery be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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/10634249/54826226_large.webp