{{ totalProductsCount }}

In cart {{totalProductsCount}} item(s)

Total:
{{sum | formatAmount}}

Your cart is empty

header-product Battery COSI CSB-44.9 GEL 4V 4.9Ah GEL lead‑acid with T1 terminal
7.96 €

Battery COSI CSB-44.9 GEL 4V 4.9Ah GEL lead‑acid with T1 terminal

Battery COSI CSB-44.9 GEL 4V 4.9Ah Photo 1
Keep track of price changes You keep track of price changes
Watch the price drop

Leave your address - as soon as the price of the product goes down, you'll know about it right away

You keep track of price changes

Battery COSI CSB-44.9 GEL 4V 4.9Ah GEL lead‑acid with T1 terminal

{{email}}
You keep track of price changes

Battery COSI CSB-44.9 GEL 4V 4.9Ah GEL lead‑acid with T1 terminal

{{email}}
{{selectedOffer && selectedOffer.price | formatAmount}}

Short description

Sealed GEL lead‑acid battery COSI CSB-44.9 GEL with nominal voltage 4V and capacity 4.9Ah. Equipped with T1 terminals, it provides maintenance‑free power for backup systems, emergency lighting, alarm systems, and small UPS units. Designed for stable performance, low self‑discharge and safe operation in compact installations.
Available for order: 3 pcs.
Warranty: 2 Years
SKU: 10634248
Manufacturer: COSI
free shipment

Cheapest delivery:

Venipak Locker LV

Pick-up points

Venipak Locker LV

Cost

1.89 €

Deliver

{{selectedOffer.parcelStationDeliveryString}}

Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
02.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
07.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 €
Parcel couriers
Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Venipak Pickup LV / Latvijas Pasts nodaļa
07.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
payment
Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
Together cheaper
{{product.price | formatAmount}}
{{product.title}}
{{productBundle.reference.specialPrice | formatAmount}}
{{productBundle.title}}
{{productBundlePreviousPrice | formatAmount}}
{{productBundleSpecialPrice | formatAmount}}

You saving {{productBundleYouSave | formatAmount}}

Product information

Description

Sealed GEL lead‑acid battery COSI CSB-44.9 GEL provides a nominal voltage of 4V and a capacity of 4.9Ah in a compact, maintenance‑free design. The battery uses GEL electrolyte technology to reduce gas emission and minimize water loss, delivering reliable standby power in small enclosures. T1 terminals allow simple connection to emergency lighting, alarm systems, compact UPS units and other low‑voltage backup applications where stable, long‑term performance and low self‑discharge are required.

Advantages

The GEL construction ensures leak‑free operation and enhanced vibration resistance compared with flooded cells. Low self‑discharge characteristics extend shelf life and reduce the need for frequent charging in standby applications. The maintenance‑free sealed design eliminates topping up and simplifies installation in confined spaces. T1 terminals provide secure, low‑profile connections compatible with a wide range of existing devices and mounting configurations.

Suitable for

  • Emergency lighting and exit signage
  • Security and alarm panels
  • Small uninterruptible power supply (UPS) units
  • Telecommunication backup and small control systems
  • Portable equipment requiring compact sealed lead‑acid power

Key specifications

  • Nominal voltage: 4 V
  • Capacity: 4.9 Ah (rated)
  • Electrolyte type: Absorbed glass mat / GEL (sealed gel lead‑acid)
  • Terminal type: T1 (faston/quick‑connect style)
  • Design: Valve‑regulated sealed lead‑acid, maintenance‑free
  • Typical applications: Standby and cyclic use in small devices

How to use

Install the battery in a dry, well‑ventilated location away from direct heat sources. Ensure correct polarity when connecting to the device using the T1 terminals and secure connections to prevent intermittent contact. Use a charger or charger/maintainer compatible with sealed GEL lead‑acid batteries and follow recommended charging voltages for standby or cyclic service. Observe manufacturer guidelines of the host device for mounting orientation and clearances; the sealed design permits installation in many compact enclosures but avoid excessive vibration and temperatures outside the specified range.

Usage recommendations

For best long‑term performance, store the battery charged and perform periodic float charging if the battery is held in standby for extended periods. Use a charger designed for GEL lead‑acid chemistry and avoid overcharging to preserve capacity and service life. Replace batteries that show significant capacity loss or visible damage; never attempt to open or service the sealed unit.

Description

Machine translation. Load original

Similar products

{{product.title}} Show details Hide details

{{highlightedFeature.featureTitle}}:

{{getProductFeatureValueById(product, highlightedFeature.featureId)}}

{{product.price | formatAmount}}
Might be useful
{{product.manufacturerName}}
{{product.categoryName}}
{{product.title}}
{{product.specialPrice}}
{{product.price}}

Customer reviews

Customer questions

FAQ

How much does the Battery COSI CSB-44.9 GEL 4V 4.9Ah cost, and is it available for purchase?

The price is 7.96 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
shipping
Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
payment
Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.