--- product_id: 535106967 title: "DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040" brand: "hxjnldc" price: "AR$98997" currency: ARS in_stock: true reviews_count: 6 category: "Hxjnldc" url: https://www.desertcart.com.ar/products/535106967-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall store_origin: AR region: Argentina --- # 3.7V nominal voltage, 4.2V max charge 800mAh high-capacity power Built-in overcharge & short circuit protection DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 **Brand:** hxjnldc **Price:** AR$98997 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your Marshall, never miss a beat! ## Quick Answers - **What is this?** DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 by hxjnldc - **How much does it cost?** AR$98997 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/535106967-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall) ## Best For - hxjnldc enthusiasts ## Why This Product - Trusted hxjnldc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Lightweight & Compact:** At just 13.7g, it keeps your headphones light without compromising power. - • **Safe & Smart Charging:** Integrated Japanese Seiko IC protects against overcharge, overcurrent, and short circuits. - • **Power Your Sound All Day:** 800mAh capacity ensures extended playback for your Marshall headphones. - • **DIY Friendly with 3-Wire Design:** Easily replace or retrofit with red (+), black (-), and thermistor wires for perfect polarity. - • **Precision Fit for Marshall Majors:** Custom-sized 41×30×6mm battery designed specifically for Major II, III & IV models. ## Overview This 3.7V 800mAh rechargeable lithium-ion polymer battery is engineered for seamless replacement in Marshall MID Major II, III, and IV Bluetooth headphones. Featuring a compact 41×30×6mm form factor and advanced Japanese Seiko IC protection, it delivers reliable, safe power with overcharge and short circuit safeguards. Its 3-wire design with thermistor enables easy DIY installation, making it the perfect upgrade to restore or enhance your audio experience. ## Description Product Description DC 3.7V Model Table of Square Rechargeable Polymer Lithium Battery (applicable to 3.7V-5V electronic products) Please carefully compare the polarity of the connector before use, the red wire is the positive "+" and the black wire is the negative "-"The yellow ( white) lead is a 'thermistor'，Do not reverse-charge or reverse-connectreverse. 3 -wi r e batteries retain red and black wires, which can replace 2 -wi r e batteries. The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire. Review: Works great - Does what it says on the tin. I now have my car camera back. Review: Fonctionne bien - J'ai remplacé la batterie de mon casque Marshall Major 4 avec car la durée de la batterie commençait à s'affaiblir, pour l'installer il suffisait juste de couper un petit bout du fil de l'ancienne batterie avec le connecteur et de souder les fils de la nouvelle batterie à ce dernier, puis de relipser le connecteur à la carte du casque. ## Features - Compatible with Marshall MID Major II Major III Major IV Bluetooth Headphones Battery Replacement VDL603040 SR603040。Also suitable for DIY electronic products with 3.7-5V and less than 2.96Wh 800mAh built-in 3-wire battery replacement.（★ Not applicable to high-power electric tools and model aircraft） - Please note that the specifications and polarity of the connector are based on the product display image,★the red wire is the positive "+" and the black wire is the negative "-"，White wire is thermistor "NTC"，Do not reverse-charge or reverse-connectreverse. ★The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire. - 603040 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 800mAh, power 2.96Wh, ★size 41×30×6mm(1.594×1.181×0.236inch）(L*W*T), Weight:13.7g(0.487oz)，Maximum current:0.8A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit. - It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, ★3 wire 3302-26 high temperature resistant silicone cable module. - If there are any quality issues within a year, ★please feel free to contact us via email for replacement. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C3HHVQ9R | | Amperage | 1 Amps | | Antenna Location | Camera, Watch | | Battery Capacity | 800 Milliamp Hours | | Battery Cell Type | Lithium Polymer | | Battery Weight | 13 Grams | | Battery capacity | 800 Milliamp Hours | | Battery cell composition | Lithium Polymer | | Best Sellers Rank | 48,308 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 997 in Rechargeable Household Batteries | | Brand | HXJNLDC | | Brand Name | HXJNLDC | | Compatible Phone Models | Headphones | | Country of Origin | China | | Customer Reviews | 4.1 out of 5 stars 86 Reviews | | Item Dimensions | 41 x 30 x 6 millimetres | | Item Weight | 13 Grams | | Manufacturer | HXJN | | Model Number | 603040 | | Number of Batteries | 1 Lithium Polymer batteries required. (included) | | Number of batteries | 1 Lithium Polymer batteries required. (included) | | Product Warranty | 1 | | Recommended uses for product | Camera, Watch | | Reusability | Rechargeable | | UPC | 754525114697 | | Unit Count | 1.0 count | | Unit count | 1.0 count | | Voltage | 3.7 Volts (DC) | ## Product Details - **Battery capacity:** 800 Milliamp Hours - **Battery cell composition:** Lithium Polymer - **Brand:** HXJNLDC - **Number of batteries:** 1 Lithium Polymer batteries required. (included) - **Recommended uses for product:** Camera, Watch ## Images ![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 1](https://m.media-amazon.com/images/I/61lC1T1tTgL.jpg) ![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 2](https://m.media-amazon.com/images/I/61ZfRNKRNuL.jpg) ![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 3](https://m.media-amazon.com/images/I/81jSmvePDIL.jpg) ![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 4](https://m.media-amazon.com/images/I/81gkArxdQYL.jpg) ![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 5](https://m.media-amazon.com/images/I/61ZYdXSCF5L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great *by M***S on 26 September 2024* Does what it says on the tin. I now have my car camera back. ### ⭐⭐⭐⭐⭐ Fonctionne bien *by A***X on 22 December 2024* J'ai remplacé la batterie de mon casque Marshall Major 4 avec car la durée de la batterie commençait à s'affaiblir, pour l'installer il suffisait juste de couper un petit bout du fil de l'ancienne batterie avec le connecteur et de souder les fils de la nouvelle batterie à ce dernier, puis de relipser le connecteur à la carte du casque. ### ⭐⭐⭐⭐⭐ Funciona bien previo empalme *by T***E on 3 February 2025* acoplado perfectamente a unos auriculares marshall, previo empalme. ## Frequently Bought Together - HXJNLDC DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Marshall Major V On-Ear Bluetooth Headphone, Black - Major IV Ear Pads Cushions Replacement Compatible with Marshall Major 4 Major IV Headphones Ear Cushions£¬Ear Muffs Memory Foam Earpads --- ## 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/535106967-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall](https://www.desertcart.com.ar/products/535106967-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-08-21*