--- product_id: 21781503 title: "Rayovac Extra Advanced Mercury Free Hearing Aid Batteries Size 10 + Keychain (40 Batteries)" brand: "extra advanced" price: "AR$69009" currency: ARS in_stock: true reviews_count: 8 url: https://www.desertcart.com.ar/products/21781503-rayovac-extra-advanced-mercury-free-hearing-aid-batteries-size-10 store_origin: AR region: Argentina --- # Zinc Air Design Mercury Free 40 Batteries Rayovac Extra Advanced Mercury Free Hearing Aid Batteries Size 10 + Keychain (40 Batteries) **Brand:** extra advanced **Price:** AR$69009 **Availability:** ✅ In Stock ## Summary > 🔊 Power Up Your Hearing Experience! ## Quick Answers - **What is this?** Rayovac Extra Advanced Mercury Free Hearing Aid Batteries Size 10 + Keychain (40 Batteries) by extra advanced - **How much does it cost?** AR$69009 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/21781503-rayovac-extra-advanced-mercury-free-hearing-aid-batteries-size-10) ## Best For - extra advanced enthusiasts ## Why This Product - Trusted extra advanced brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Unmatched Power:** Experience consistent energy that lasts longer. - • **Convenient Keychain:** Always have a battery on hand! - • **Eco-Friendly Choice:** Go green with mercury-free technology. - • **Precision Engineering:** Zinc air cell design for optimal performance. - • **Quality You Can Trust:** Manufactured with world-class techniques. ## Overview Rayovac Extra Advanced Mercury Free Hearing Aid Batteries Size 10 come in a pack of 40, designed with a zinc air cell for maximum power and performance. These eco-friendly batteries ensure reliable energy for your hearing devices while being easy to carry with a convenient keychain. ## Description Rayovac Extra Advanced Mercury Free Hearing Aid Batteries Size 10 + Keychain (40 Batteries) ## Features - Rayovac Mercury Free offers consistent power and performance with an environmental focus. - Rayovac provides the optimal energy solution for almost every device. With world-class manufacturing techniques and continual quality testing and improvement, you'll be assured of the highest product performance in each and every battery. - Rayovac's zinc air cell design provides precision air flow, maximizing power and maintaining performance. ## Images ![Rayovac Extra Advanced Mercury Free Hearing Aid Batteries Size 10 + Keychain (40 Batteries) - Image 1](https://m.media-amazon.com/images/I/617T8u6CPfL.jpg) ![Rayovac Extra Advanced Mercury Free Hearing Aid Batteries Size 10 + Keychain (40 Batteries) - Image 2](https://m.media-amazon.com/images/I/31Uvx4SFsjL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Five Stars *by K***R on Reviewed in the United States on April 5, 2018* great for the price ### ⭐⭐⭐⭐ 4.0 out of 5 stars Arrived quickly *by C***K on Reviewed in the United States on June 22, 2017* I only use Rayovac at the recommendation of my audiologist. He advised that they last longer than other batteries. I have not used other batteries so have nothing to which I can compare these batteries other than Rayovacs that I have bought from other Amazon venders. These do not seem to last as long as batteries that I bought from a UK vender. ### ⭐ 1.0 out of 5 stars 90% of them are dead *by M***A on Reviewed in the United States on January 31, 2014* I have been wearing hearing aids for about 10 years and loves the rayovac batteries. I started running low and instead of buying so many I decided to try this smaller 4 pack. First I noticed some would die the next day, I needed new hearing aids and blamed them. Then half the batteries wouldn't work so I start taking brand new batteries out of the package and measuring the voltage, should be 1.4 volts and the first 6 I tested all tested around .2 to .3 volts Some tested zero and were completely dead.. They haven't expired so I have no idea whats wrong with them but they are pure JUNK..I have bought the 6 pack form a different seller and the Rayovac Extra would last 8 to 9 days consistently. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/21781503-rayovac-extra-advanced-mercury-free-hearing-aid-batteries-size-10](https://www.desertcart.com.ar/products/21781503-rayovac-extra-advanced-mercury-free-hearing-aid-batteries-size-10) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-05-22*