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Tedgix K4 B4 Waterproof Battery (423 Wh)
  • Tedgix K4 B4 Waterproof Battery (423 Wh)
Tedgix K4 B4 Waterproof Battery (423 Wh)

Tedgix K4 B4 Waterproof Battery (423 Wh)
$349.00 USD
Description

Standard 423 Wh battery for Tedgix K4 series motors. About 5 hours of relaxed cruising on the K4C, sealed in an IP68 metal case, with USB-C PD3.1 in and out so it doubles as a power bank. Keep a charged spare and swap in seconds. Battery module only, charger sold separately.
Key Features
  • 423 Wh Capacity: About 5 hours at a 3.1 mph cruise on the K4C, or 1.3 hours at the 6 mph top speed.
  • IP68 Metal Case: Sealed against water, salt spray, and sand for fresh and saltwater use.
  • Quick Swap: Waterproof DC connector clicks onto the K4 motor cable in seconds.
  • Doubles as a Power Bank: USB-C PD3.1 bidirectional charging tops off phones, cameras, drones, and laptops.
  • Smart BMS: Intelligent temperature control and charge protection, rated for about 1,000 cycles.
Product Specifications
  • Manufacturer: Tedgix (sold by NIXY as a third-party accessory)
  • Capacity: 423 Wh lithium battery
  • Compatibility: Tedgix K4 series motors (including the K4C Cruise)
  • Runtime: about 5 h at 5 km/h (3.1 mph), about 1.3 h at 9.5 km/h (6 mph); varies with load and conditions
  • Waterproof Rating: IP68, sealed metal case
  • Motor Connection: waterproof quick-connect DC port (max 35A)
  • Charging: USB-C PD3.1 bidirectional fast charging; dedicated Tedgix charger sold separately
  • Protection: smart BMS with intelligent temperature control, rated about 1,000 charge cycles
  • Dimensions: 197.5 x 76.4 x 123.8 mm (7.8 x 3.0 x 4.9 in)
  • Weight: 2,570 g (5.7 lbs)
  • In the box: battery module only
  • Warranty: 1-year manufacturer warranty
Shipping & Returns
  • Free U.S. shipping on orders over $100 (excluding watercraft).
  • Watercraft (paddleboards, kayaks, decks) ship for a flat $35 per item.
  • Buy with confidence.
    If you’re not completely satisfied, you can return your product within 30 days.
  • For full details, see our Shipping & Return Policy.

Tedgix K4 B4 Waterproof Battery

The Tedgix B4 is the standard 423 Wh battery for the Tedgix K4 series SUP and kayak motors, the same pack that ships in the K4C Cruise bundle. On the K4C it delivers about 5 hours of relaxed cruising at 3.1 mph, or about 1.3 hours at the 6 mph top speed. Keep a charged spare in your dry bag and a quick swap doubles your time on the water.

The sealed metal case carries an IP68 rating, protecting the cells against water, salt spray, and sand in both fresh and saltwater. The waterproof quick-connect DC port clicks onto the K4 motor cable in seconds, and an integrated battery management system with intelligent temperature control watches over every charge and discharge, rated for roughly 1,000 cycles.

The B4 also pulls double duty off the board. Its USB-C port supports PD3.1 bidirectional fast charging, so the same pack that drives your motor can top off a phone, camera, drone, or laptop at the beach or campsite.

This is the battery module only. The dedicated Tedgix charger is sold separately, and the pack also accepts USB-C PD charging. Backed by a 1-year manufacturer warranty. Tedgix products are sold by NIXY as third-party accessories.

Good to know
How long does the Tedgix B4 battery run on the water?

On the Tedgix K4C motor the 423 Wh B4 runs about 5 hours at a relaxed 5 km/h (3.1 mph) cruise, or about 1.3 hours at the 9.5 km/h (6 mph) top speed. Those are manufacturer figures measured in controlled conditions, so real runtime varies with rider weight, board, wind, and current.
Is the B4 battery waterproof?

Yes. The B4 has a sealed metal case rated IP68, which protects it against water immersion, salt spray, and sand. It is built for both freshwater and saltwater use, and the DC connection to the motor is waterproof as well.
Does the B4 work with the Tedgix K4C motor sold at NIXY?

Yes. The B4 is the same 423 Wh battery included in the K4C Cruise motor bundle, so it works as a direct spare or replacement. It connects through the waterproof quick-connect DC port and swaps in seconds, no tools needed.
Can the B4 charge my phone or other devices?

Yes. The USB-C port supports PD3.1 bidirectional fast charging, so the B4 doubles as a high-capacity power bank for phones, cameras, drones, tablets, and laptops. With 423 Wh on tap it can recharge a typical phone many times over.
What is the difference between the B4 and B8 batteries?

Capacity and weight. The B4 holds 423 Wh, weighs 5.7 lbs, and runs about 5 hours at cruise speed. The B8 holds 808 Wh, weighs 9.3 lbs, and runs about 8.75 hours. The B4 suits day trips and most paddlers; the B8 is for long expeditions. NIXY currently offers the B8 as part of the K4C motor bundle.
Does the B4 battery come with a charger?

No, this is the battery module only. The dedicated Tedgix charger is sold separately. The B4 also accepts USB-C PD3.1 fast charging, so a high-wattage USB-C PD charger you already own can charge it as well.

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