# Battery Avaya Li-ion 650mAh 3720

**URL:** https://aio.lv/en/product--avaya-700466683--3233581
**Data updated:** 2026-03-12 19:22 (EET)
**Category:** Portable Device Batteries
**Manufacturer:** Avaya
**Manufacturer code:** 700466683
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 32.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--avaya-700466683--3233581

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.99 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

The Avaya Li-ion 650mAh Battery is designed for the Avaya 3720 phone, providing reliable power and extended usage time. Its compact design ensures easy installation, while the high-quality lithium-ion technology guarantees durability and performance. This battery is an essential accessory for maintaining optimal functionality of your device.

## Long description

The Avaya Li-ion 650mAh 3720 battery is a replacement power source designed specifically for the Avaya 3720 desk phone. It delivers consistent voltage and capacity for voice communications, standby, and phone features that require internal power. The compact lithium-ion cell construction offers a balance of run time and size to fit the original battery compartment without modification.
Advantages
This Li-ion battery provides stable discharge characteristics and a nominal capacity of 650mAh to support extended call time and reliable standby performance. Its lightweight and compact form factor makes installation straightforward, while the chemistry ensures low self-discharge and a long cycle life when used according to manufacturer guidance. The design is intended for a direct fit in compatible Avaya devices, maintaining original device ergonomics and functionality.
Suitable for
Replacement power for Avaya 3720 desk phones
Maintaining continuous operation in office phone systems
Phone battery swap during maintenance or refurbishment
Ensuring reliable standby power for voicemail and alert functions
Key specifications
Battery type: Lithium-ion (Li-ion)
Nominal capacity: 650 mAh
Form factor: Compact cell designed for Avaya 3720 battery compartment
Intended use: Rechargeable backup power for desk phone functions
Typical applications: Voice calls, standby, alert and voicemail support
How to use
Power down the Avaya 3720 phone or follow the device manufacturer’s instructions for safe battery replacement. Remove the existing battery from the compartment, align the replacement battery contacts with the phone’s connector and insert it until it seats firmly. Reassemble any covers and restore power. Charge the new battery according to the phone’s charging procedure before normal use to ensure full capacity and optimal battery conditioning.
Usage recommendations
Store the battery at moderate temperature and avoid prolonged exposure to high heat. Use the battery within the device’s specified temperature and charging parameters, and recycle or dispose of the battery according to local regulations when it reaches end of life. For best performance, avoid deep discharges and follow the phone manufacturer’s guidance for battery maintenance.

## Specifications

| Feature | Value |
|---|---|
| Product type | Battery |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium-Ion (Li-Ion) |
| Battery capacity | 650 mAh |
| Battery voltage | 3.7 V |
| Product colour | Black |

### Technical details

| Feature | Value |
|---|---|
| Compatibility | AVAYA 3720 |

### Packaging data

| Feature | Value |
|---|---|
| Quantity | 1 |

## FAQ

### How much does the Battery Avaya 3720 cost, and is it available for purchase?

The price is 38.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 113 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 20.07.2026 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 Avaya 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 Avaya 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, 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/3233581/64208322_large.webp