# Battery PATONA 2797 for HP EliteBook 745/755/840/850 G3 G4, Li-Ion 4100 mAh, black/yellow

**URL:** https://aio.lv/en/product--patona-2797--11829445
**Data updated:** 2026-03-09 14:38 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** PATONA
**Manufacturer code:** 2797
**EAN:** 4055655185417
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 114.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 94.62 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--patona-2797--11829445

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Replacement laptop battery PATONA 2797 compatible with HP EliteBook 745, 755, 840 and 850 G3/G4 series. Lithium‑Ion (Li‑Ion) chemistry with 4100 mAh capacity, designed to restore mobile power for productive use. Lightweight (0.187 kg) spare part in black and yellow finish; suitable for on‑the‑road work, business use and battery replacement repairs.

## Long description

PATONA 2797 is a replacement Li‑Ion battery designed for HP EliteBook 745, 755, 840 and 850 G3/G4 series notebooks. With a nominal capacity of 4100 mAh, this compact black and yellow battery restores portable power for everyday business tasks and fieldwork. The unit is lightweight (approx. 0.187 kg) and intended as a spare part for users who need reliable runtime recovery without changing the original laptop hardware design.
Advantages
This PATONA battery uses Lithium‑Ion technology to deliver consistent discharge characteristics and stable voltage under typical laptop loads. The 4100 mAh capacity offers a balance between runtime and weight for mobile professionals. Its form factor and connector compatibility match HP EliteBook 745, 755, 840 and 850 G3/G4 models, enabling straightforward replacement. The black and yellow finish corresponds to PATONA’s visual design while maintaining OEM-like fit.
Suitable for
 Replacing a worn or failing battery in HP EliteBook 745/755/840/850 G3 and G4 laptops
 Extending mobile runtime for business travel and remote work
 Service and repair shops performing battery replacements
Key specifications
 Battery technology: Lithium‑Ion (Li‑Ion)
 Nominal capacity: 4100 mAh
 Weight: approximately 0.187 kg
 Colour: black and yellow
 Compatible laptop series: HP EliteBook 745, 755, 840, 850 G3 and G4
How to use
Power down the laptop and disconnect any external power sources. Remove the existing battery following the laptop manufacturer’s service instructions or user manual to avoid damage. Insert the PATONA 2797 battery into the battery bay until it locks in place and reconnect any retaining screws or latches required by the device. Reconnect the AC adapter and allow the battery to charge fully before first use to ensure proper calibration and optimal initial performance.
Usage recommendations
Store and operate the battery at moderate temperatures and avoid prolonged exposure to very high or very low temperatures. For longer battery life, perform regular charge cycles, avoid deep discharges where possible, and use the laptop’s power management settings to reduce unnecessary load. If you are not comfortable replacing the battery yourself, seek assistance from an authorized service centre.

## Specifications

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium-Ion (Li-Ion) |
| Battery capacity | 4100 mAh |
| Battery voltage | 11.4 V |
| Battery capacity type | Standard |
| Battery capacity | 46 Wh |
| Product colour | Black, Yellow |

### Technical details

| Feature | Value |
|---|---|
| Type | Battery |
| Compatibility | EliteBook 745, 755, 840, 850 G3 G4 |
| Brand compatibility | HP |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.187 kg |

### Packaging data

| Feature | Value |
|---|---|
| Package weight | 271 g |
| Package type | Box |

## FAQ

### How much does the Battery PATONA 2797 for HP EliteBook G3/G4 cost, and is it available for purchase?

The price is 114.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 08.07.2026 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 Battery PATONA 2797 for HP EliteBook G3/G4 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 PATONA 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 PATONA 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: battery technology, battery capacity, weight, product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/11829445/67284845_large.webp