---
product_id: 184540333
title: "USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter"
brand: "kiwifotos"
price: "$64"
currency: NZD
in_stock: true
reviews_count: 13
category: "Kiwifotos"
url: https://www.desertcart.nz/products/184540333-usb-lens-warmer-lens-dew-heater-strip-with-temperature-regulator
store_origin: NZ
region: New Zealand
---

# USB powered for on-the-go use Operates down to -40°C without damage 3-level adjustable temp control USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter

**Brand:** kiwifotos
**Price:** $64
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your lens fog-free and your shots flawless, no matter how cold it gets!

## Quick Answers

- **What is this?** USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter by kiwifotos
- **How much does it cost?** $64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/184540333-usb-lens-warmer-lens-dew-heater-strip-with-temperature-regulator)

## Best For

- kiwifotos enthusiasts

## Why This Product

- Trusted kiwifotos brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Portable USB Power:** Plug into any USB power bank or device for uninterrupted outdoor use all night long.
- • **Effortless Installation:** Adjustable, flexible strip wraps snugly around your lens for quick setup and removal.
- • **Universal Compatibility:** Fits lenses and eyepieces under 80mm diameter—perfect for DSLR, telescopes, and more.
- • **Precision Temperature Control:** Customize your lens warmth with low, medium, and high settings to beat the cold.
- • **Rapid Heat Transfer & Insulation:** High-quality materials ensure fast warming and prevent condensation for crystal-clear views.

## Overview

The USB Lens Warmer is a compact, adjustable dew heater strip designed for lenses and eyepieces under 80mm diameter. Featuring a 3-level temperature regulator and USB power compatibility, it prevents condensation and fogging even in extreme cold down to -40°C. Lightweight and easy to install, it’s an essential accessory for photographers and astronomers seeking clear, uninterrupted views in chilly conditions.

## Description

desertcart.com : USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter : Electronics

Review: Does the job. - After a fogging incident on my 14mm the other night, I thought I would give a lens warmer a try. It worked well. For less then $20, problems solved. Used my BLUETTI EB 55 as power supply, but a smaller 10,000 amp power supply would have worked fine.
Review: Works very well - Astronomy. New to the hobby... and I am so glad these work as well as they do;-) Anyone who stares through a telescope on a winter night would understand. No drama, just plug it in and does the job nicely. Comes with a nice bag (some don't, I have others), has a nice cord that is easy to manage when cold. And the cord has been long enough to work fine for my needs (8"dob with a battery at it's base). I leave it on all night. In the beginning I checked the temperature regularly but now have just settled in to taking it for granted (sigh of relief)

## Features

- 【Widely Used】: ***NOTE:Due to the adjustment of the controller's appearance, but the function has not changed, the inventory of the new and old versions may be mixed together, so the new and old versions will be shipped randomly.*** suitable for telescopes, viewfinder lenses, digital cameras of most sizes (Diameter less than 80mm). Thermos, drink cup, baby bottle or any good idea that requires insulation.
- 【Adjustable Temperature】: The product is equipped with a 1.5m temperature regulator with low, medium and high modes. Low temperature wire design can withstand temperatures as low as -40°C, and will not freeze and break in a cold environment for a long time.
- 【USB power supply】: USB port design, Suitable for long-term outdoor heating of the lens. You can connect it to a power bank or any other power source with a USB port.
- 【Fast heat transfer and Good thermal insulation】: Our lens heater prevent the lens from fogging by heating the camera lens or telescope, so as not to affect the effect of the equipment. Made of high-quality materials with fast heat transfer and good thermal insulation.
- 【Quick installation and Removal】: Can be adjusted according to the size of the lens, suitable for lenses with an outer diameter of less than 80mm(3.15 inch).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083NJCFCH |
| Best Sellers Rank | #670 in Digital Camera Accessories |
| Customer Reviews | 4.4 4.4 out of 5 stars (435) |
| Date First Available | January 9, 2020 |
| Item Weight | 2.08 ounces |
| Item model number | DHS-1 |
| Manufacturer | Jinjiacheng Photography Equipment Co.,Ltd. |
| Product Dimensions | 5.24 x 2.17 x 1.38 inches |

## Product Details

- **Brand:** KIWIFOTOS
- **Eye Piece Lens Description:** Plossl
- **Finderscope:** Reflex
- **Focus Type:** Manual Focus
- **Item Weight:** 59 Grams
- **Objective Lens Diameter:** 80 Millimeters
- **Optical Tube Length:** 3.15 Inches
- **Power Source:** USB Powered
- **Product Dimensions:** 1.38"D x 5.24"W x 1.38"H
- **Telescope Mount Description:** Altazimuth Mount

## Images

![USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter - Image 1](https://m.media-amazon.com/images/I/71RRFiMz9BS.jpg)
![USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter - Image 2](https://m.media-amazon.com/images/I/71F6p+hIAVL.jpg)
![USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter - Image 3](https://m.media-amazon.com/images/I/71A4nhvtYgL.jpg)
![USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter - Image 4](https://m.media-amazon.com/images/I/61-ooHO-ihS.jpg)
![USB Lens Warmer, Lens Dew Heater Strip with Temperature Regulator, Condensation Prevention for Telescopes Camera DSLR Lens Telescope Eyepieces Less Than 3.15 inch (80mm) in Diameter - Image 5](https://m.media-amazon.com/images/I/71Dxowv9sES.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Does this device have to use the timer? Can it stay on and off without using the timer?   Is the the timer just an additional feature?**
A: You do not need to use a timer with this device.  Additionally, it has three heat settings:  low, medium, and high.

**Q: What's the wattage for each setting hi/med/lo ?**
A: Not sure wattage. I used in sub freezing (20*F) weather on lowest setting and had no fogging/dew on  Nikkor Z20mm 1.8, Nikkor Z70-200 2.8, and a Tokina 14-28 2.8. Works well, surprisingly low cost. (I use a cheaply rechargeable battery bank)

**Q: Recommended power bank that is known to work with this dew heater?**
A: Any that are 2.1 to 2.5 amps

**Q: Does this unit automatically turn off? i need a lens warmer that will last 4-5 days without turning off.**
A: Only if your battery runs out. No thermostat… just constant heat settings

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does the job.
*by L***S on August 18, 2025*

After a fogging incident on my 14mm the other night, I thought I would give a lens warmer a try. It worked well. For less then $20, problems solved. Used my BLUETTI EB 55 as power supply, but a smaller 10,000 amp power supply would have worked fine.

### ⭐⭐⭐⭐⭐ Works very well
*by S***T on December 11, 2023*

Astronomy. New to the hobby... and I am so glad these work as well as they do;-) Anyone who stares through a telescope on a winter night would understand. No drama, just plug it in and does the job nicely. Comes with a nice bag (some don't, I have others), has a nice cord that is easy to manage when cold. And the cord has been long enough to work fine for my needs (8"dob with a battery at it's base). I leave it on all night. In the beginning I checked the temperature regularly but now have just settled in to taking it for granted (sigh of relief)

### ⭐⭐⭐⭐⭐ Keeps my lens dry during nightscape photography
*by K***A on May 23, 2025*

I use this when doing nightscape photography and it does a great job of keeping the dew from forming on my lens. It has low, medium and high settings and so far I’ve only had to use medium. I power it with a usb battery bank. (Not included) Comes with a pouch that’s perfect for storing hit and the battery together.

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-03*