--- product_id: 188966521 title: "- Freestyle Comfort 16 Cell Battery" brand: "fergrelm h" price: "13523 DH" currency: MAD in_stock: true reviews_count: 8 category: "Fergrelm H" url: https://www.desertcart.ma/products/188966521-freestyle-comfort-16-cell-battery store_origin: MA region: Morocco --- # Up to 16 hours runtime 6-hour fast recharge 13,400 mAh high capacity - Freestyle Comfort 16 Cell Battery **Brand:** fergrelm h **Price:** 13523 DH **Availability:** ✅ In Stock ## Summary > 🔋 Power your freedom—stay charged, stay unstoppable. ## Quick Answers - **What is this?** - Freestyle Comfort 16 Cell Battery by fergrelm h - **How much does it cost?** 13523 DH with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/188966521-freestyle-comfort-16-cell-battery) ## Best For - fergrelm h enthusiasts ## Why This Product - Trusted fergrelm h brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Designed for 300+ charge cycles with an intuitive LED gauge and TEST button for instant power status. - • **Double the Capacity:** 13,400 mAh lithium-ion battery doubles the life of standard packs for worry-free mobility. - • **Power That Keeps Up:** Experience up to 16 hours of uninterrupted oxygen support—because your day doesn’t stop early. - • **Fast & Flexible Charging:** Recharge fully in just 6 hours via AC/DC or optional desktop charger—ready when you are. - • **Travel-Ready & FAA Approved:** Fly with confidence—lightweight, compact, and approved for in-flight use worldwide. ## Overview The CAIRE FreeStyle Comfort 16-Cell Battery is a premium lithium-ion power solution offering up to 16 hours of runtime at the lowest setting. With a robust 13,400 mAh capacity, fast 6-hour recharge, and FAA approval for air travel, it ensures reliable, long-lasting oxygen support on the go. Lightweight and durable, it features over 300 charge cycles and an easy-to-read LED charge indicator, making it the ultimate companion for active, health-conscious professionals. ## Description The CAIRE FreeStyle Comfort 16-Cell Battery Pack is a genuine extended power solution for the FreeStyle Comfort Portable Oxygen Concentrator. This high-capacity lithium-ion replacement battery delivers up to 16 hours at setting 1 or 8 hours at setting 2, making it ideal for extended flights, long road trips, and active daily use. With 13,400 mAh capacity, the battery recharges in about 6 hours from empty to full using AC, DC, or the optional desktop charger. Built to withstand 300+ charge cycles, it offers lasting reliability and includes a LED charge indicator with TEST button for quick power checks. Designed for convenience, the 16-cell pack weighs just 3.1 lbs and measures 7.3 × 3.1 × 2 inches, keeping the concentrator lightweight at 6 lbs total when installed. FAA approved for in-flight use, this official CAIRE accessory (BT035-1S) ensures safe, portable oxygen therapy wherever you go. Review: Just what I needed , more time between the charging plug ! - This 16 cell POC battery is just what I needed , the stock battery works just fine but needed more time between recharging. I ordered the battery , got here faster than expected. Swapped out the old battery and replaced it with the new battery and about six hours later was fully charged. It also fit the carrier , just unzip the expansion part of the carrier, the whole thing is about an 1 1/2 inches taller . Now I can go to the doctor appointment without dragging along the 110 AC charger . If you’re on O2 24/7 this will get you out in the world a little longer without fear of a low battery . Review: Good Heavy - Be prepared for a heavier load with this longer life battery! I purchased a backpack concentrator carrier due to the increased weight! The battery is great! Easier to relax when out, not concerned about battery life! ## Features - Extended Runtime – Enjoy up to 16 hours of power at setting 1 (8 hours at setting 2; 6 hours at setting 3) with this official CAIRE accessory. - High Capacity Lithium-Ion – 16-cell battery with 13,400 mAh capacity, doubling the life of the standard 8-cell battery. - Fast Recharge – Fully recharges in about 6 hours using AC/DC power or the optional desktop charger. - Travel Ready & FAA Approved – Safe for in-flight use. Lightweight design keeps the device at only 6 lbs (2.7 kg) with this battery installed. - Reliable & Durable – Designed for 300+ charge cycles, with built-in LED charge gauge and TEST button for quick status checks. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07ZQS6ZJH | | Antenna Location | Camera, Remote Control Vehicle | | Battery Capacity | 16 Volts | | Battery Cell Type | Lithium Ion | | Battery Weight | 964 Grams | | Best Sellers Rank | #391,959 in Health & Household ( See Top 100 in Health & Household ) #1,885 in Coin & Button Cell Batteries | | Brand | FERGRELM H | | Customer Reviews | 4.6 4.6 out of 5 stars (108) | | Item Dimensions | 5.51 x 6.69 x 9.84 inches | | Manufacturer | Caire | | Model Name | Comfort | | Model Number | BT035 | | Number of Batteries | 1 Lithium Ion batteries required. | | Reusability | Rechargeable | | UPC | 019321934505 | | Unit Count | 1.00 Count | | Voltage | 1.5 Volts | | Warranty Description | 1 Year | ## Product Details - **Battery Capacity:** 16 Volts - **Battery Cell Composition:** Lithium Ion - **Brand:** FERGRELM H - **Number of Batteries:** 1 Lithium Ion batteries required. - **Recommended Uses For Product:** Camera, Remote Control Vehicle ## Images ![- Freestyle Comfort 16 Cell Battery - Image 1](https://m.media-amazon.com/images/I/31qMQLDkymL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Just what I needed , more time between the charging plug ! *by D***P on July 9, 2023* This 16 cell POC battery is just what I needed , the stock battery works just fine but needed more time between recharging. I ordered the battery , got here faster than expected. Swapped out the old battery and replaced it with the new battery and about six hours later was fully charged. It also fit the carrier , just unzip the expansion part of the carrier, the whole thing is about an 1 1/2 inches taller . Now I can go to the doctor appointment without dragging along the 110 AC charger . If you’re on O2 24/7 this will get you out in the world a little longer without fear of a low battery . ### ⭐⭐⭐⭐⭐ Good Heavy *by L***N on June 6, 2025* Be prepared for a heavier load with this longer life battery! I purchased a backpack concentrator carrier due to the increased weight! The battery is great! Easier to relax when out, not concerned about battery life! ### ⭐⭐⭐⭐⭐ HEAVY *by S***! on April 17, 2024* My only complaint is how heavy this is. Yes, no question that it lasts lots longer than the smaller version. I can shop all day without worrying that I might run out of battery. --- ## 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.ma/products/188966521-freestyle-comfort-16-cell-battery](https://www.desertcart.ma/products/188966521-freestyle-comfort-16-cell-battery) --- *Product available on Desertcart Morocco* *Store origin: MA* *Last updated: 2026-04-28*