# Rechargeable 6V GEL Battery COSI CSB-64.5 4.5Ah, sealed maintenance-free

**URL:** https://aio.lv/en/product--cosi-csb-645-gel--10129428
**Data updated:** 2026-02-12 21:55 (EET)
**Category:** Batteries
**Manufacturer:** COSI
**Manufacturer code:** CSB-64.5 GEL
**EAN:** 3100001375651
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.93 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 9.03 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cosi-csb-645-gel--10129428

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

Sealed rechargeable 6V GEL battery COSI CSB-64.5 with 4.5Ah capacity. Designed for standby and cyclic use in small UPS units, alarm systems, medical devices, and portable equipment. Maintenance-free VRLA GEL construction provides leak-proof operation, stable performance, and long shelf life. Suitable where compact, reliable power backup is required.

## Long description

Sealed rechargeable 6V GEL battery COSI CSB-64.5 4.5Ah is a compact, maintenance-free VRLA battery designed to provide reliable standby and cyclic power. Its GEL electrolyte and sealed construction prevent leakage and reduce evaporation, delivering consistent voltage for small UPS units, alarm systems, medical devices, and portable equipment that require a dependable 6V power source in a compact form factor.
Advantages
The GEL construction ensures stable performance across a range of temperatures and minimizes self-discharge during storage. As a sealed, maintenance-free unit it does not require regular topping up of electrolyte and operates leak-free in upright or slightly tilted positions. The battery’s compact dimensions and 4.5Ah rated capacity offer a balance between energy density and portability, suitable for equipment with limited installation space.
Suitable for
 Small UPS and emergency power supplies
 Alarm and security systems
 Portable medical and diagnostic devices
 Portable electronic equipment and measurement instruments
Key specifications
 Nominal voltage: 6 V
 Nominal capacity: 4.5 Ah (at 20-hour rate)
 Battery type: Valve-regulated lead-acid (VRLA) with GEL electrolyte
 Construction: Sealed, maintenance-free
 Recommended operating temperature range: typical for GEL batteries (check device requirements)
 Mounting: Upright or slight tilt; leak-proof design
How to use
Install the battery in the device compartment according to the device manufacturer’s instructions and polarity markings. For standby applications, connect to the charger or UPS charging circuit that is compatible with 6V VRLA/GEL batteries and follow recommended float charge voltage settings. For cyclic use, employ a charger with proper cyclic charge profile to maximize cycle life. Observe correct terminal connections, ensure secure mounting, and avoid short-circuiting the terminals.
Usage recommendations
Store and operate the battery within the temperature limits specified by your equipment; avoid prolonged exposure to temperatures outside the typical GEL range. Use chargers and charging profiles designed for 6V VRLA/GEL batteries, and perform periodic charging if the battery is kept in long-term storage to prevent deep discharge.

## FAQ

### How much does the 6V GEL Battery COSI CSB-64.5 4.5Ah cost, and is it available for purchase?

The price is 10.93 € (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 01.07.2026 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/10129428/52365947_large.webp