electrode pads

TENS Unit Pad Placement Guide: Lower Back, Knee, Shoulder & More

By KONGZEE Editorial Team

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Short answer: With the TENS unit switched off, place pads on clean, dry, intact skin near or around the painful area. Keep pads separated and position them so the tingling covers the intended area. Do not place pads on the front or sides of the neck, head, broken or numb skin, or so current passes across the chest.

Before You Place the Pads

  1. Read the manual for your specific TENS unit.
  2. Switch the device off before connecting, applying or moving pads.
  3. Wash and dry the skin. Do not apply over lotion, oil, cuts, irritation or reduced sensation.
  4. Inspect each pad and replace it if the gel is dry, damaged or lifting.
  5. Ask a physiotherapist or other healthcare professional for individualized placement if pain is severe, unexplained, follows surgery or involves a diagnosed nerve condition.

General Placement Principles

The Royal National Orthopaedic Hospital advises placing pads on either side of the painful area and keeping them at least 2.5 cm (1 inch) apart. Another useful approach is to surround the painful area rather than placing every pad directly on the most sensitive point.

  • Keep the entire gel surface in contact with the skin.
  • Do not place pads directly over prominent bone if another nearby position is comfortable.
  • Do not let pads touch each other.
  • Start at the lowest intensity and increase slowly to a strong but comfortable tingling sensation.
  • If the sensation does not cover the intended area, switch the unit off before repositioning pads.

Lower Back Pad Placement

Place pads on the muscles to either side of the painful lower-back area. Do not place them directly on the spine. For a broad area, two pads can sit on each side while remaining separated. Do not arrange pads so current travels through the torso or across the chest.

Sciatica and Radiating Leg Pain

Sciatica can have different causes and may require medical assessment. A general placement sometimes used is on the lower back above the buttocks, on either side of the spine. Do not place pads over numb skin, and seek professional guidance before following the path of radiating pain down the leg.

Knee Pad Placement

Place pads on the soft tissue above, below or beside the painful part of the knee while keeping them separated. Avoid placing pads directly on irritated skin, a fresh incision or an area with reduced sensation. Follow your surgeon or physiotherapist's instructions after an operation.

Shoulder Pad Placement

Place pads on the muscular area around the back or side of the shoulder. Avoid the front and sides of the neck. Do not pair a chest electrode with an upper-back electrode because that may direct current across the chest.

Neck and Upper Back

Do not place pads on the front or sides of the neck. General upper-back placement may use the muscles below or beside the shoulders, but avoid the head and throat. Ask a healthcare professional for guidance if symptoms include weakness, numbness, dizziness or pain radiating into the arm.

Where TENS Pads Should Not Go

Guidance from the NHS and Cleveland Clinic advises against placement on or near:

  • The front or sides of the neck
  • The head, temples, eyes or mouth
  • Broken, infected, irritated or numb skin
  • Varicose veins or areas with circulation concerns
  • The chest and upper back at the same time
  • Any configuration that directs current across the chest

Do not use TENS while sleeping, bathing, driving or operating machinery. Ask a healthcare professional before use if you are pregnant or have a pacemaker, implanted electronic device, epilepsy, heart disease, cancer, circulation problems or reduced sensation.

Pad Care Affects Comfort

Pads that are dry or partly detached can cause uneven or uncomfortable stimulation. Store reusable pads on their original backing and replace them when they no longer adhere evenly. KONGZEE 12-pack TENS unit replacement pads use a standard 2mm pin connector; check device compatibility before ordering.

Frequently Asked Questions

How far apart should TENS pads be?

Keep pads separated. The Royal National Orthopaedic Hospital recommends at least 2.5 cm (1 inch), while some clinical guides advise approximately one pad width. Follow your manual if it specifies a greater distance.

Can I move the pads while the device is on?

No. Switch the TENS unit off before applying, removing or repositioning pads.

Should TENS feel painful?

No. Increase intensity gradually until the sensation is strong but comfortable. Stop if you feel burning, sharp pain or significant skin irritation.

Can I place pads directly on the spine?

General placement uses the muscles on either side of the spine rather than directly over it. Ask a clinician for individualized guidance.

For setup and troubleshooting, visit KONGZEE TENS Unit Manual & Support.

Reviewed July 24, 2026. This guide provides general educational information and does not replace individualized medical advice.

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KONGZEE

KONGZEE Portable Rechargeable TENS Unit with EMS | Dual Channel, 12 Pads

Sale price$79.995.0

The KONGZEE portable rechargeable TENS unit combines TENS, EMS, massage and customizable settings in one dual-channel device. It includes 12 reusable electrode pads, independent A/B outputs and 40 intensity levels for convenient home and travel use.

At a Glance

  • Portable and rechargeable: Compact design, USB-C charging and a carrying pouch.
  • Dual-channel control: Adjust channels A and B independently for two body areas.
  • TENS and EMS: TENS provides sensory nerve stimulation; EMS produces controlled muscle contractions.
  • 40 intensity levels: Start low and increase only to a strong but comfortable sensation.
  • 12 reusable pads: Mixed sizes with standard 2mm pin connectors.

Specifications

Feature Specification
Therapy modes TENS, EMS, Massage and DIY custom mode
Output Independent dual channel (A/B)
Intensity 40 adjustable levels
Programs 24 preset modes plus customizable settings
Pad connector Standard 2mm pin
Power Built-in rechargeable battery with USB-C charging
Included pads 12 reusable electrode pads in mixed sizes
Best suited for Portable home use, travel, sensory stimulation and muscle activation

TENS vs EMS

TENS primarily stimulates sensory nerves and usually feels like tingling without visible muscle movement. EMS stimulates motor nerves and produces muscle contractions. The appropriate mode depends on your goal, health and placement. Read our TENS vs EMS guide before selecting a mode.

Independent Dual Channels

Channels A and B can be adjusted separately, allowing different comfortable intensity levels on two areas during the same session. Dual channel does not mean every mode or placement combination is appropriate. Never position electrodes so current passes across the chest.

How to Use the TENS Unit

  1. Charge the unit and connect the lead wires while the device is switched off.
  2. Apply pads to clean, dry, intact skin near the intended area.
  3. Select the appropriate mode and begin at the lowest intensity.
  4. Increase gradually until the sensation is strong but comfortable, never painful.
  5. Switch the unit off before moving or removing the pads.

See the TENS unit pad placement guide and visit the KONGZEE TENS unit manual and support page for setup and troubleshooting.

What's in the Box

  • 1 × KONGZEE portable TENS and EMS unit
  • 12 × reusable electrode pads in mixed sizes
  • 2 × lead wires
  • 1 × pad holder plate
  • 1 × carrying pouch
  • 1 × USB-C charging cable
  • 1 × user manual

Electrode Pad Compatibility

The included pads and lead wires use a standard 2mm pin connection. Check your connector type before purchasing replacements. KONGZEE replacement TENS pads and replacement lead wires are available separately.

Basic Safety

  • Apply pads only to clean, dry, intact skin.
  • Do not place pads on the front or sides of the neck, head, mouth, eyes, broken or numb skin, or across the chest.
  • Do not use while sleeping, bathing, driving or operating machinery.
  • Stop if stimulation is painful or skin becomes irritated.
  • Ask a healthcare professional before use if you are pregnant or have a pacemaker or another implanted electronic device, epilepsy, heart disease, cancer, circulation problems or reduced skin sensation.

This product is not a substitute for medical diagnosis or treatment. Follow the included manual and advice from your healthcare professional.

Frequently Asked Questions

Is this a rechargeable TENS unit?

Yes. It has a built-in rechargeable battery and USB-C charging for portable home and travel use.

What does dual channel mean?

Two independently adjustable outputs let you set a comfortable intensity for channel A and channel B separately.

Can I use it on my lower back?

General lower-back placement uses the muscles on either side of the painful area rather than directly over the spine. Follow the manual and our placement guide, and seek professional advice for severe, unexplained or radiating pain.

How strong should TENS feel?

Start at the lowest level and increase gradually until the sensation is strong but comfortable, never painful.

How long should a session last?

Session length depends on the goal, individual response and professional advice. Begin conservatively and follow the included manual rather than assuming a longer session is better.

Can I take this TENS unit on an airplane?

The compact rechargeable unit can be packed for travel. Airline and airport battery rules vary, so keep it switched off and check your carrier's current requirements before flying.

Which replacement pads fit?

The device uses standard 2mm pin pads. Confirm the connector type before purchasing third-party replacements.

Who should not use a TENS or EMS unit?

People with certain implanted electronic devices or medical conditions may need to avoid electrical stimulation. Review the safety section and ask a healthcare professional if you are unsure.

Color: White