# OHYES BAT OP4075A 40V Replacement Batteries, 7,500mAh, 2-Pack

Keep compatible Ryobi 40V tools ready with two OP4075A replacement batteries, each with 7,500mAh capacity and four LED charge indicators.

- [Original product page](https://www.ofertitastop.com/us/product/ohyes-bat-op4075a-40v-replacement-batteries)
- [View offer](https://www.ofertitastop.com/us/visit/ohyes-bat-op4075a-40v-replacement-batteries)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-10-24T01:52:11.856Z
- Brand: OHYES BAT
- SKU: ofertitastop-us-161831
- Category: Hardware > Tool Accessories > Power Tool Batteries
- Source store: amazon US
- Active deal: Yes
- Price: 79.88 USD
- Previous price: 94.10 USD
- Discount: 15%
- Rating: 4.4 / 5
- Reviews: 1733

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

Choosing a replacement battery is about matching your tool and having the capacity you need for the job. This two-pack provides a pair of 40V, 7,500mAh lithium-ion batteries for compatible Ryobi tools. Four built-in LED indicators make charge levels easy to check at a glance.

## How to use it
Install a battery in a compatible tool and use the LED indicators to monitor its charge. Keeping the second battery charged gives you another pack available for a longer work session or a quick swap between tasks. The batteries are replacements for selected Ryobi 40V packs, and compatibility depends on the specific tool and charger model.

They are listed for Ryobi 40V tools including models RY40180, RY40200, RY40201A, RY40400, RY40402A, RY40502A, RY40601A, and RY40LM30. They are not compatible with RY40002 or RY40408. Compatible charger models include OP400, OP400A, OP401, OP403, OP403A, OP404A, OP406A, and ZROP401. For routine care, remove the pack before cleaning or adjusting a tool, and use the battery at least once every two to three months.

## Tech specs
- Type: Replacement battery pack
- Quantity: 2 batteries
- Capacity: 7,500mAh each
- Voltage: 40V
- Battery chemistry: Lithium-ion
- Charge indicators: 4 built-in LED lights
- Protection: Overcharge, over-discharge, overcurrent, and short-circuit protection
- What’s included: 2 replacement batteries and 1 user manual

## Why it makes sense
A two-pack is a practical choice when one battery may not cover every task in a work session. You can keep a second pack ready while using the first, and the four-light indicator helps you see when it is time to charge. The stated capacity of 7,500mAh gives each battery a clear specification to compare when choosing a replacement for a compatible 40V system.

Built-in protection addresses several common electrical conditions, including overcurrent and short circuits. That makes the pack’s safety features relevant during everyday charging and tool use, while the LED display provides a straightforward way to check charge status without guessing. The included manual provides guidance for setup and use.

When choosing between buying one replacement battery and keeping a spare on hand, this set is suited to shoppers who want two packs for their compatible tools. It is also important to match the battery and charger to the listed Ryobi 40V compatibility, a shared voltage label alone does not establish compatibility across every tool model.

## Buying verdict
For Ryobi 40V tool owners looking for a two-battery replacement set, the OP4075A combines 7,500mAh capacity, four charge-level LEDs, and built-in electrical protections. Its strongest practical benefit is having a second compatible pack available, making it a useful fit for planned yard or home projects where a ready spare supports a smoother change between tasks.

## Images

![OHYES BAT OP4075A 40V Replacement Batteries, 7,500mAh, 2-Pack — 1](https://www.ofertitastop.com/i/RJAnBxYxgrgKbtEk3tYMTPCxZWGfk9Wu9lp3Psqnt8Bvn4aQOIrwPG1X1jJOOlIfbQeoOaUIFUfWE9IRLIooZjOTdI5_V6T_SVzf7RtAaZzOz3qJw9BfhXlFCQ.jpg)

![OHYES BAT OP4075A 40V Replacement Batteries, 7,500mAh, 2-Pack — 2](https://www.ofertitastop.com/i/GqupD4MV6fKuv6mpoJw6-RQjyrCWmt-2otzeSoQBpgsCv-7IhOGd00e3PD6UPJu6cHwqLIglecoCI8lFkTMuJtTZlhyxXsyXUrzyeC7sy99vpuCND_YbUdt4bQ.jpg)

![OHYES BAT OP4075A 40V Replacement Batteries, 7,500mAh, 2-Pack — 3](https://www.ofertitastop.com/i/Ab-3GylJfG6cEColNDNpDh0wRsijXEa9YLSnIzCEFmQT2uPUhR3cnPK4L0MmepV1wusJy8ah8c0_5BLlw7Xu6Y40Fgt2RfY1JFqcBvjCT8r29CwlZ9lsgZpcmg.jpg)

![OHYES BAT OP4075A 40V Replacement Batteries, 7,500mAh, 2-Pack — 4](https://www.ofertitastop.com/i/F7J8FrBX4xM5n4YVmigfKRkSUNRKIZMfwRxgu8heqeSJv0s2poBmBhAnjkkzRsM0UolGn9rOEx9KedyBQPb8VzhN-kzML5udRPSceySbqb6HaqYHlM8GGLdlkw.jpg)

![OHYES BAT OP4075A 40V Replacement Batteries, 7,500mAh, 2-Pack — 5](https://www.ofertitastop.com/i/_Xw6gYZ4zJKD51erWDha66g6g1Ew5oQ0fl7RlYp7YurHcPhateHL3WE3Kou137Jdcl7qGjXtNUN20X2eG6BXnF64pmYYNPPS7xFDr4XezU0sF1_Y6HJ2zuRvDg.jpg)