# Sealed Lead-Acid Battery COSI CSB-65 6V 5Ah, VRLA rechargeable

**URL:** https://aio.lv/en/product--cosi-csb-65--4511308
**Data updated:** 2026-02-12 14:10 (EET)
**Category:** Batteries
**Manufacturer:** COSI
**Manufacturer code:** CSB-65
**EAN:** 3100001080432
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.95 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 8.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cosi-csb-65--4511308

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 19.06.2026 | free |
| Pickup points | 26.06.2026 | 1.99 EUR |
| Courier delivery to door | 26.06.2026 | 4.99 EUR |

## Summary description

COSI CSB-65 is a sealed VRLA lead-acid battery with a nominal voltage of 6V and capacity of 5Ah. It provides maintenance-free, rechargeable power for small UPS units, alarm systems, emergency lighting, portable equipment and hobby projects. Designed for stable discharge, upright installation and reliable standby use where compact, replaceable battery backup is needed.

## Long description

COSI CSB-65 is a sealed VRLA lead-acid battery with a nominal voltage of 6V and a rated capacity of 5Ah. Designed as a rechargeable, maintenance-free power source, it is intended for standby and cyclic applications where a compact, replaceable battery is required. The battery supports upright installation and provides stable discharge characteristics suited to small UPS units, alarm systems, emergency lighting, portable devices and DIY electronics projects.
Advantages
The sealed VRLA design eliminates the need for periodic electrolyte maintenance and reduces gas emission under normal operation. As a lead-acid battery with a 6V nominal voltage and 5Ah capacity, it delivers predictable discharge behavior and straightforward recharge compatibility with common chargers and power systems. Its compact form and sealed construction simplify installation and replacement in confined equipment compartments.
Suitable for
Small uninterruptible power supplies (UPS) and backup modules
Alarm and security systems
Emergency and exit lighting
Portable measurement and handheld devices
Hobby electronics and DIY projects requiring rechargeable backup
Key specifications
Battery type: Sealed valve-regulated lead-acid (VRLA)
Nominal voltage: 6V
Nominal capacity: 5Ah
Rechargeable: Yes, designed for cyclic and standby use
Installation orientation: Upright recommended
Maintenance: Maintenance-free, sealed construction
How to use
Before first use, ensure the battery is charged according to the charger manufacturer’s instructions for 6V lead-acid batteries. Install the battery in the device with the correct polarity and secure it in the upright position if space and mounting allow. Use a compatible charger or charging circuit designed for sealed lead-acid batteries to avoid overcharging; follow the device or system manual for recommended float and cyclic charge parameters. For standby applications, connect the battery to the appropriate backup input and verify correct operation by testing the device under battery power.
Usage recommendations
Store and operate the battery within the temperature range specified by your equipment manufacturer. Avoid deep discharges where possible and recharge promptly after use to maximize service life. Dispose of or recycle the battery in accordance with local regulations for lead-acid batteries.

## FAQ

### How much does the Battery COSI CSB-65 6V 5Ah cost, and is it available for purchase?

The price is 9.95 € (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 19.06.2026 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/4511308/18520801_large.webp