Refurbished 3.7V — 22 Deals

22 open-box and refurbished 3.7V deals are live for shoppers in the US right now, with discounts averaging 23% off retail. Prices range from $6 to $41, and every listing shows the seller's condition grade, current price, savings versus list price and stock status — so you can compare before you buy. Top brands on sale include HXJNLDC, YTKavq, Generic and AOLIKES. Inventory syncs from Amazon and other partner stores throughout the day; open-box stock is usually one-of-a-kind, so the best deals sell out fast.

22 live US listings.

USA

Giobbiy

Giobbiy 3.6V 2750mAh 68301000 68300900 Ni-Mh Rechargeable Battery for HETRONIC Remote Control Battery, Grey (3.6 Volt, 2.75Ah, Rechargeable)

$40⁷²

MakerFocus 2pcs 3.7V 10000mAh Lithium Polymer Rechargeable Battery 1S LiPo Battery with Protective Board, Insulation Coating and PH2.0 Plug for Raspberry Pi Battery Pack UPS and Other

$29¹⁷

7.4V 5000mAh Li-Polymer Rechargeable Battery Pack Replacement Set Compatible with Heated Gloves Liners Mittens Socks Vest Jacket Hand Muff Charger 7.4v Battery(2 Pack)

$18⁵⁰

800mAh 3.7V Replacement Battery Compatible with Cardo Packtalk Bold, Packtalk Duo, Packtalk Slim, Scala Rider, SRPT0102, BAT00007

$6⁰⁸

iMah Replacement Battery 300-10342 for Honeywell PROSIXC2W Panel | 3.6V 2480mAh 8.93Wh

$11²⁴

Sun Will Rechargeable 7.4V 2200MAH Batteries for Heated Gloves Socks Hats Balaclava Ski Mask Thermal Underwears Bottoms (2pcs Included)

Used – Mint

$33⁶⁶

$40.99

-18% Save $7.33

Update: 18 hours 10 mins

Buy at Amazon.com

USA

HXJNLDC

HXJNLDC 802540 3.7v 900mAh Lithium Battery for Sena 10S 20s 30K Series 10S-01 20s-01 20s evo 30K-01D Motorcycles Bluetooth Headset Battery Replacement Intercom

Used – Mint

$24⁹⁵

$31.50

-21% Save $6.55

Update: 20 hours 37 mins

Buy at Amazon.com

USA

Svenirven

Svenirven Battery for 7.4V 2PCS Rechargeable Batteries for Heated Gloves, Liners, Mittens, Socks, Hand, Jacket, Vest

Used – Mint

$23⁷⁵

$29.99

-21% Save $6.24

Update: 16 hours 53 mins

Buy at Amazon.com

USA

HXJNLDC

502540 3.7v Battery 550mAh for Sena SMH5 Motorcycles Bluetooth Headset Battery Replacement Sena SMH5-FM SMH5D SPH10H-FM Part Number (P/N): ICP40/25/40P fits Nextbase 312GW HD Recording DVR Cam

$9¹⁴

Sunshan Horiza 7.4V 3500mAh Li-Polymer Rechargeable Battery Pack Replacement Set Compatible with Heated Gloves Liners Mittens Socks Vest Jacket Hand Muff Charger 7.4v Battery(2 Pack)

$25⁶⁴

MAUSOCELA IP462539 Replacement Battery, Compatible Phona'k ComPilot, ComPilot 2 Wireless Headset Battery-300mAh/1.11Wh-3.7V Li-Polymer

Used – Mint

$10⁶⁷

$14.99

-29% Save $4.32

Update: 17 hours 43 mins

Buy at Amazon.com

USA

Youejoeq

Youejoeq FLip 5 Battery Replacement for Only FLIP5 Bluetooth Speake,fits Part no ID1060-B,1INR19/66-2 (5200mAh)

$13⁷¹

LBTPH Digital Battery Replacement for myQ Smart Garage Video Keypad Alarm System, Rechargeable Battery Compatible with MYQ 18650MH1-1S2P with Micro-USB Charging Cable, 3.7V 6100mah/22.57Wh

$15⁹⁹

AEC643333 Battery, [2026 New upgraded] Ultra High Capacity 760mAh Li-Polymer Replacement Battery for Beats Studio 2.0, Studio 3.0, Solo pro,Wireless Headphones with Professional Replacement Tool Kits

$9⁸⁹

XINLANTECH 1ICR19/66 3.7v 2600mAh Battery Replacement for Vtech VM3252/ VM3254/ VM3258/ RM2851/ VM923/ VM924/VM934/ RM2771 Baby Monitor Snom C300 Conference Speakerphone Battery

$13⁹⁹

Enyuly 850mAh Replacement Battery for Cardo Packtalk Duo Scala Rider Packtalk SRPT0102 BAT00007 (3.7V)

$6⁰³

AOLIKES 800mAh 3.8V Battery Replacement for Jabra Evolve2 75 Series Wireless Headset, BlueParrott B650-XT, S650-XT Bluetooth Vtech Snom Bluetooth Headset

Used – Mint

$19¹⁶

$21.99

-13% Save $2.83

Update: 17 hours 23 mins

Buy at Amazon.com

USA

Generic

6000mAh Battery for JBL Charge 2 Plus Charge 2+ GSP1029102 MLP912995-2P Battery

Used – VeryGood

$12⁶⁰

$15.20

-18% Save $2.60

Update: 22 hours 52 mins

Buy at Amazon.com

USA

YTKavq

YTKavq 3.7V 10000mAh 1160100 Lithium Polymer Ion Rechargeable Lipo Battery with PH 2.0mm Pitch Connector

$15²⁶

YTKavq 3.7V 600mAh Battery 503040 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector

$7¹⁴

AOLIKES 1600mAh Replacement Battery for Razer Thresher Ultimate/Thresher Stereo/Nari Ultimate Wireless 7.1 / BlackShark V2 Pro (2020) Gaming Headsets - Over 50% Extended Battery Life‌

$18⁹⁹

MakerHawk 3.7V 3000mAh LiPo Battery Rechargeable 1S 103665 Lithium Polymer Battery with Protection Board Insulated Rubber Tape, Micro JST 1.25 Plug for Ar duino ESP32 Development Board (2 Pack)

Used – Mint

$17⁰⁹

$17.99

-5% Save $0.90

Update: 9 hours 26 mins

Buy at Amazon.com

3.7V open-box FAQ

How much can I save on open-box 3.7V?

Discounts on 3.7V at OpenBoxFox currently average 23% off retail across 22 live listings, with prices from $6 to $41. Savings are measured against the manufacturer's list price.

Are open-box and refurbished 3.7V safe to buy?

Yes — every listing shows the seller's condition grade (from open-box "Like New" to certified refurbished) before you buy. You purchase directly from the seller, such as Amazon, and that seller's standard return policy applies to your order.

Which 3.7V brands are on sale open-box right now?

The most-listed brands in 3.7V at the moment are HXJNLDC, YTKavq, Generic, AOLIKES and Enyuly. New open-box inventory arrives daily, so brand availability changes often.

How often are 3.7V deals updated?

OpenBoxFox syncs 3.7V inventory from partner stores throughout the day. Sold-out listings are removed automatically and new deals appear shortly after we find them.