# Battery HP BTI L77991-005 for COMPAQ laptops

**URL:** https://aio.lv/en/product--origin-storage-l77991-005-bti--4492692
**Data updated:** 2026-01-13 21:24 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** origin storage
**Manufacturer code:** L77991-005-BTI
**EAN:** 5059902006257
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 112.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 93.38 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--origin-storage-l77991-005-bti--4492692

## 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 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The BTI L77991-005 battery is designed for HP and COMPAQ laptops, ensuring reliable power supply and extended usage time. It is a high-quality replacement part that meets OEM specifications, providing excellent performance and longevity for your device.

## Long description

The BTI L77991-005 battery for COMPAQ laptops by origin storage is a rechargeable replacement battery designed to restore mobile power to compatible HP and COMPAQ notebook models. It provides an OEM-spec performance profile intended to match the original battery’s capacity and voltage characteristics, helping to maintain typical runtime and system stability during portable use. The product overview focuses on reliable power delivery and compatibility for users needing a direct battery replacement.
Advantages
This replacement battery delivers a consistent power output and is manufactured to meet the physical and electrical specifications used in the original design, ensuring proper fit and safe operation. The cell chemistry and assembly methods are selected to offer stable discharge characteristics, temperature tolerance under normal operating conditions, and protection against common failure modes. The battery is compatible with standard laptop charging circuitry and charging profiles used by the target HP and COMPAQ models.
Suitable for
Replacing a worn or failing battery in compatible HP and COMPAQ laptop models
Extending usable runtime for mobile work, study, or travel without immediate access to mains power
Maintaining battery-backed settings and short-term power during brief disconnections
Key specifications
Form factor: rechargeable removable laptop battery pack compatible with specified notebook models
Cell type: lithium-ion chemistry designed for laptop use
Voltage and capacity: matched to the original laptop battery electrical profile to preserve expected runtime (refer to the laptop service manual or current battery label for exact values)
Connector: multi-pin laptop battery interface compatible with the manufacturer’s charging circuit
Dimensions and weight: designed to fit the laptop battery bay without modification
How to use
Power down the laptop and disconnect the AC adapter before removing the old battery. Release any battery latches or screws as required by your laptop model, then remove the original battery and install the replacement into the battery bay until it clicks or seats securely. Reconnect the AC adapter and charge the new battery fully before first use to balance cells and calibrate the charge indicator. Use the operating system’s power management utilities to confirm correct battery reporting and ensure firmware or BIOS settings are set to default charging behavior if applicable.
Usage recommendations
For safe operation, use the battery within the laptop’s specified temperature range, avoid exposing it to water or high humidity, and store it partially charged if not used for extended periods. Do not attempt to disassemble or short-circuit the pack. If the laptop reports irregular battery status or excessive heating, stop use and consult a technician or the vendor for inspection or replacement.

## Specifications

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

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium-Ion (Li-Ion) |
| Number of battery cells | 3 |
| Battery voltage | 11.55 V |
| Battery capacity | 56 Wh |
| Product colour | Black |

### Technical details

| Feature | Value |
|---|---|
| Type | Battery |
| Compatibility | COMPAQ |
| Brand compatibility | HP |

## FAQ

### How much does the Battery HP BTI L77991-005 cost, and is it available for purchase?

The price is 112.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 12 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. 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 origin storage 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 origin storage 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, 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/4492692/58998162_large.webp