Brother LB3691-003

Overview

The Brother LB3691-003 is an automobile power adapter designed specifically for the PocketJet 3 Series mobile printers. It provides a steady 12 V DC power supply directly from a standard vehicle accessory outlet, allowing you to keep your printer running smoothly while on the move. With a 10-foot cord, it offers flexible placement options inside your vehicle, making it easier to print receipts, delivery notes, or inspection reports without interruption.

Key features

• Delivers consistent 12 V DC power to ensure reliable printing during travel
• 10-foot cable length allows convenient routing and printer placement within the vehicle
• Compact and lightweight design fits easily in glove compartments or storage areas
• Simple plug-in connection compatible with any standard 12 V vehicle accessory socket
• Durable construction built to withstand bumps, vibrations, and frequent use on the road

Key specs

• Power output: 12 V DC
• Cord length: 10 feet
• Compatibility: Brother PocketJet 3 Series printers
• Connection type: Standard vehicle accessory outlet plug
• Weight: Lightweight and portable

Connectivity and compatibility

This adapter is designed exclusively for the Brother PocketJet 3 Series printers, ensuring seamless power delivery without compatibility issues. It connects directly to any standard 12 V vehicle accessory outlet, which is common in most cars, trucks, and vans. This makes it a practical choice for professionals who need to print on the go without relying on battery power or wall outlets.

Ideal uses and environments

The LB3691-003 is well suited for field technicians, delivery drivers, public safety officers, and sales professionals who frequently travel between job sites. It supports mobile printing tasks by providing a reliable power source inside vehicles, helping users stay productive during long shifts or multiple stops. Its durable design and long cord length make it easy to integrate into various vehicle setups, whether the printer is mounted, clipped, or stored.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

Learn more

Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, and include all tags, manuals, accessories, and original, unaltered packaging. To start a return, please email us for approval. Items sent back without approval may be refused or returned to the sender. If any item is kept, its value will be deducted from the refund.

Non-returnable items include opened TVs, combos, or monitors 37″ or larger, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method. Please allow 5–7 business days for the credit to post. Shipping and handling are nonrefundable. If an item is used, incomplete, or not in its original condition, a 30% restocking fee may apply. Direct exchanges are not offered. To exchange an item, please purchase the replacement separately and return the original for a refund.

Learn more

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

Learn more