W20V4AH - Rechargeable Battery WESTINGHOUSE - Free user manual and instructions
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USER MANUAL W20V4AH WESTINGHOUSE
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Blue circular icon with a white crown symbol (no text or numbers)User Manual

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Line drawing of a mechanical device with no visible text or symbolsW20V2AH (20V 2.0Ah)

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Line drawing of a portable electronic device with front panel and control buttons (no text or symbols)W20V4AH (20V 4.0Ah)
W20V5AH (20V 5.0Ah)

WARNING Operating, servicing, and maintaining this equipment can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, and wear gloves or wash your hands frequently when servicing this equipment. For more information go to www.P65warnings.ca.gov.
DISCLAIMERS
All information, illustrations, and specifications in this manual were in effect at the time of publishing. The illustrations used in this manual are intended as representative reference views only. We reserve the right to make any specification or design change without notice.
ALL RIGHTS RESERVED
All rights reserved. No reproduction allowed in any form without written permission from Westinghouse Outdoor Power Equipment.


Read this manual before using or performing maintenance on this product. Failure to operations and safety precautions in this manual can result in serious injury or death.
UPDATES
The latest User Manual for your Westinghouse products can be found under our support tab: westinghouse.com/pages/manuals
Or scan the following QR code with a smartphone camera to be directed to the link.
PRODUCT REGISTRATION
For trouble-free warranty coverage, it is important to register the Westinghouse product.
Register by:
- Going online at: westinghouse.com/register
- Scanning the following QR code with a smartphone camera to be directed to the mobile registration link.
IMPORTANT: Keep the purchase receipt for trouble-free warranty coverage.

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QR code image containing encoded data, no visible human-readable textHAVE QUESTIONS?
Email us at service@wpowereq.com
or call 1-855-944-3571
BATTERY SPECIFICATIONS
| Model Watt Hours | Number of Cells | Voltage Per Cell Charge Time | |
| W20V2AH 40Wh 5 | 3.7V 0.5h (W20V) | 2DP) | |
| W20V4AH 80Wh 10 | 3.7V 1h (W20V) | 2DP) | |
| W20V5AH 100Wh | 10 3.7V 1.25h (W20V) | 20V2DP) |
NOTICE This product is designed and rated for continuous operation at ambient temperatures between 23^ F ( -5^ C) and 104^ F ( 40^ C). If needed, this product can be operated in extremely hot or extremely cold temperatures for short periods. If the product is exposed to extreme temperatures during storage, it should be brought back within the optimal temperature range before operation.
SAFETY
SAFETY DEFINITIONS
The words DANGER, WARNING, CAUTION, and NOTICE are used throughout this manual to highlight important information. Be sure that the meanings of this safety information are known to all who operate, perform maintenance on, or are near the product.
This safety alert symbol appears with most safety statements. It means attention, become alert, safety is involved! Please read and abide by the message that follows the safety alerts symbol.
DANGER Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE Indicates a situation which can cause damage to the product, personal property, and/or the environment, or cause the equipment to operate improperly.
NOTE: Indicates a procedure, practice or condition that should be followed for the generator to function in the manner intended.
SAFETY SYMBOLS
Follow all safety information contained in this user manual as well as the information on the product labeling.
| Symbol | Description |
![]() | Safety Alert Symbol |
![]() | Fire Hazard |
![]() | Electrical Shock Hazard |
Li-ion | Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Check with your local authority or retailer for recycling advice. |
![]() | Do Not Operate in Wet Conditions |
![]() | Read User Manual |
For the proper use, maintenance and storage of this battery, it is important that you read and understand the instructions given in this manual.
To avoid serious injury, risk of fire, explosion, and danger of electric shock or electrocution:
- DO NOT probe the charger with conductive materials. The charging terminals hold 120V.
- If the battery case is cracked or damaged, do not insert into the charger. Replace with a new battery.
- DO NOT charge Westinghouse batteries with any other type of charger.
- DO NOT spill liquids on the battery or charger.
- DO NOT try to use the charger for any other purpose than what is presented in this manual.
- DO NOT try to short circuit any terminals of battery.
- Battery chemicals cause serious burns. Never allow contact with skin, eyes, or mouth. If a damaged battery pack leaks battery chemicals, use rubber or neoprene gloves to dispose of it. If skin is exposed to battery fluids, wash with soap and water and rinse with vinegar. If eyes are exposed to battery chemicals, immediately flush with water for 20 minutes and seek medical attention. Remove and dispose of contaminated clothing.
- DO NOT charge the battery in rainy or in wet conditions. Do not immerse the tool, battery, or charger in water or other liquid.
WARNING:
- DO NOT allow the battery or charger to overheat. If they are warm, allow them to cool down.
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Recharge only at room temperature.
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DO NOT cover the ventilation slots on the top of the charger. Do not set the charger on a soft surface, Keep the ventilation slots of the charger clear.
- DO NOT allow small metal items into the charger vents.
- Unplug the charger and remove battery before wiping off dust. Do not clean with liquids.
- DO NOT place the battery in the sun or in a warm environment. Store at room temperature in cool, dry conditions.
- DO NOT try to connect two chargers together.
- Charge the battery for a minimum of 2 hours every month to sustain battery life.
- The battery cells may develop a small leak under extreme usage or temperature conditions. If the outer seal is broken and the leakage gets on your skin: Use soap and water to wash immediately. Neutralize with lemon juice, vinegar, or other mild acid.
- If leakage gets in your eyes, seek medical attention.
- Do not use a damp cloth or detergent on the battery or battery charger.
• Always remove the battery before cleaning, inspecting, or performing any maintenance on the tool.
Safety notes and precautions
• DO NOT disassemble the battery.
- Keep away from children.
- DO NOT expose the battery to water or salt water.
- Store the battery in a cool and dry location.
- DO NOT place the battery in high-temperature locations, Exposure to fire or temperature above 265°F (130°C) may cause explosion.
- DO NOT reverse the positive terminal and the negative terminal of the battery.
- DO NOT connect the positive terminal and the negative terminal of the battery to each other with any metal objects.
- DO NOT knock, strike, or step on the battery.
CHECKING BATTERY CAPACITY
Press the Fuel Gauge Button below. The lights will illuminate according to the batteries capacity level. See below:
FUEL GAUGE![]() | |
| Lights Capacity | |
| 3 Green Lights Full | capacity |
| 2 Green Lights 60% | capacity |
| 1 Green Light 30% | capacity and requires charging soon |
| 1 Green Flashing Light | Under 10% capacity and requires charging immediately |
NOTICE
While the battery is charging, one of the green capacity lights flashes to indicate how much the rged.
BATTERY PACK REMOVAL AND PREPARATION FOR RECYCLING
Please recycle or dispose of batteries properly. This product contains lithium-ion batteries. Local, state or federal laws may prohibit disposal of lithium-ion batteries in ordinary trash. Consult your local waste authority for information regarding available recycling and disposal options.

WARNING
Cover the terminals on the battery pack with heavy-duty adhesive tape after removal.
Do not attempt to destroy or disassemble battery pack or remove any of its components. Lithium-ion batteries must be recycled or disposed of properly. Never touch both terminals with metal objects or body parts as short circuit may result. Keep away from children. Failure to comply with these warnings could result in a fire or serious injury.
For the proper use, maintenance and storage of this battery, it is important that you read and understand the instructions given in this manual.

WARNING
Storage tips:
- Be sure the battery is fully charged and that the charger is disconnected before storing.
- Do not store the battery in sunlight, in an excessively warm place, or near a furnace. The battery life will be shortened.
- Store the battery pack where the temperature is below 80^(27^) and away from moisture.
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QR code image containing encoded data, no visible human-readable text¿TIENES PREGUNTAS?
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QR code image containing encoded data, no visible human-readable textENREGISTREMENT DU PRODUIT
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QR code image containing encoded data, no visible human-readable textVOUS AVEZ DES QUESTIONS ?
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Blue circular icon with a white crown symbol (no text or numbers)www.westinghouse.com
Service Hotline (855) 944-3571
777 Manor Park Drive, Columbus, OH 43228

and Westinghouse are trademarks of Westinghouse Electric Corporation.
Used under license by Westinghouse Outdoor Power Equipment.
© 2026 Westinghouse Outdoor Power Equipment, All Rights Reserved.



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