battery | Newegg.com

I'm Celeste, Newegg's tech expert! Need help with "battery"?

UPS with automatic voltage regulation?

Home battery backup systems?

UPS vs power bank differences?

How long do backups last?

Quick View

KingSener A2181 Replacement Battery For Apple Watch SE 44mm A2352 A2354

$28^.99

Free Shipping

Quick View

Smart Watch for Women Men Fitness: Smart Watch ,Fitness Tracker, 2 Bands | 120+Sport Mode/30 Day+Battery Life/SpO2 Sleep Heart Rate Monitor/IP68/Compatiblefor iPhone&Android/Bluetooth Make/Answer Call

$79^.66

More options from $79.66

Free Shipping

Quick View

Estry Battery Replacement for Venu 2 361-00139-10

$25^.26

Free Shipping

Quick View

Smart Watch for Women Men Android & iPhone, 1.85" Ultra HD AMOLED Display,10 Day Battery, 3ATM Swimming Waterproof, Answer/Make Calls, Fitness/Heart Rate/Sleep Tracker/100 Sports, Black

$79^.99

Free Shipping

Volume Discounts:$76.99 - $79.99

Quick View

Moto Watch 70 - Health and Fitness Smartwatch for Every Day Wear, Advanced Health Features, Up to 10 Days Battery Life - Compatible with Android and iOS - Rose Gold, MOSWZ70-RG

$85^.99

Free Shipping

Volume Discounts:$82.99 - $85.99

Quick View

Smart Watch for Men Women (Answer/Make Call) - 2.01" Activity Tracker | Heart Rate/Sleep/SpO2 Monitor/IP68 Waterproof /110+ Sport Modes/100 Days Extra-Long Battery Life for Android/iOS - 2 Straps

$97^.99

Free Shipping

Volume Discounts:$56.99 - $97.99

Quick View

Google Pixel Watch 4 (45mm) - Android Smartwatch - Heart Rate and Sleep Tracking - 40-Hour Battery - Fitness Tracking - Google AI - Matte Black Aluminum Case - Obsidian Active Band - LTE (2025 Model)

$524^.99

Free Shipping

Quick View

Military Smart Watch for Men(Answer/Make Calls),Outdoor Smartwatch with 100 Days Battery/Flashlight/Compass/Heart Rate/SpO2/Sleep Monitor/2 Straps, Rugged Fitness Watch for iPhone/Android Phones

$66^.99

Free Shipping

Quick View

Watch 6 Active Smart Watch AMOLED 18-Day Battery Black | Bluetooth calling, heart rate and SpO recording, sleep tracking, IP68 water resistance, slim flat-edge design

$78^.99

Free Shipping

Quick View

Smart Watches for Men, 1.91" AMOLED Men's Fitness Watch with 7-Day Battery | 2026 Upgrade LED Flashligh, IP68 Waterproof, 24/7 Heart Rate/Sleep Monitor, 120+ Workout Modes for Android iPhone(2 Bands)

$37^.99

Free Shipping

Quick View

Smart Watch 2.01" AMOLED Display 10-Day Battery, BT Call & Text, Workout Modes, 24/7 HR BP O2 Sleep Mon, IP67 Waterproof, Fitness Tracker for Men and Women, Compatible with iOS/Android

$26^.99

Free Shipping

Volume Discounts:$23.99 - $26.99

Quick View

Moto Watch (Phantom Black) | AMOLED display, 10-Day battery, heart rate & SpO2 tracking

$111^.99

Free Shipping

Volume Discounts:$108.99 - $111.99

Quick View

Moto Watch 120 - Premium Bluetooth Smartwatch with AMOLED Display, 10-Day Battery, Heart Rate & SpO2 Tracking, Fitness & Health Monitoring, Compatible with Android and iPhone - Phantom Black

$105^.99

Free Shipping

Quick View

Smart Watches for Men Women, 1.43" AMOLED Display, 7-Day Battery Life, 120+ Sport Modes with Heart Rate Sleep Monitor, Bluetooth Calling, IP68 Waterproof Fitness Watch for iPhone Android (Black)

$36^.99

Free Shipping

Quick View

Military Smart Watch for Men, 1400mAh 60-Days Battery, 1.85" HD Smartwatch with LED Flashlight, 100+ Sports Mode, IP68 Waterproof, Pedometer, Fitness Watch for Android iOS, Black

$94^.99

Free Shipping

Quick View

Military Smart Watch for Men(Answer/Make Calls),Outdoor Smartwatch with 100 Days Battery/Flashlight/Compass/Heart Rate/SpO2/Sleep Monitor/2 Straps, Rugged Fitness Watch for iPhone/Android Phones

$64^.66

More options from $64.66

Free Shipping

Quick View

GPS Outdoor Smartwatch - 1.7" HD Display, Multi-Satellite Positioning (GPS+Beidou+GLONASS), LED Flashlight, BT Calling, Heart Rate & SpO2 Monitor, 1100mAh Long Battery, Rugged Alloy Case for Hiking Ru

$49^.00

Free Shipping

Quick View

I220 Women's Smart Watch - Rose Gold, 1.27" HD Display, Bluetooth Calling, Heart Rate Monitor, 5-7 Day Battery, Rich dials, Fitness Tracker & Fashion Accessory

$39^.00

Free Shipping

Quick View

Smart Watches for Women Men, 1.83" HD Smart Watch for Android iPhone | with Calls/Messages, Sleep/Heart Rate/SpO2/Blood Pressure Monitor, 110+ Sports Modes Fitness Watch, 1000mAh Battery, Black

$59^.99

Free Shipping

Quick View

Bip 5 Core Smart Watch for Men Women 46mm, 11-Day Battery, Fitness Activity Tracker with 120+ Sports Modes, Heart Rate & Sleep Monitor, for Android Phone & iPhone, Water Resistant, Black

$97^.99

Free Shipping

Volume Discounts:$94.99 - $97.99

Quick View

1.91" Smart Watch, Fitness Tracker, 3 Bands (1 Metal & 2 Silicone) | Premium Smartwatch for Men Women: Bluetooth Call, Heart Rate Sleep SpO2 Monitor, 315mAh Battery, 100+ Sports, iOS Android

$97^.99

Free Shipping

Volume Discounts:$94.99 - $97.99

Quick View

Military Smart Watch for Men, 30+ Day Battery Life, Bluetooth Call Black | 1.95" HD, 120+ sports modes, heart rate/sleep monitor, IP68 waterproof, Fitness Watch with LED Flashlight for iOS/Android

$72^.99

Free Shipping

Volume Discounts:$69.99 - $72.99

Quick View

Military Smart Watch for Men(Answer/Make Call), Outdoor Sports Smartwatch with Flashlight/100 Days Battery/Compass/Heart Rate/SpO2/Sleep Monitor/2 Straps, Fitness Tracker for iPhone/Android Phones

$64^.99

Free Shipping

Quick View

Smart Watch for Women (Answer/Make Call), 1.65" HD Fitness Tracker with Heart Rate/SpO2/Sleep Monitor, Pedometer, 110+ Sports Modes, 3ATM Waterproof, 7-Day Battery, for iOS Android

$108^.99

Free Shipping

Volume Discounts:$105.99 - $108.99

Quick View

GPS Smart Watch for Men (Answer/Make Calls), 2.01'' Military Rugged | Compass Smartwatch with 10-Day Battery, Heart Rate, Sleep Tracking, 100+ Sports Modes, 2 Straps

$72^.99

Free Shipping

Volume Discounts:$69.99 - $72.99

Quick View

Smart Watch for Women, 30-Day Battery Life, Bluetooth Call (Answer/Make), 1.85" HD Fitness Tracker with Heart Rate Sleep SpO2 Monitor, 100+ Sports Modes, 4 Bands & 2 Charms, Android iPhone Compatible

$72^.99

Free Shipping

Volume Discounts:$69.99 - $72.99

Quick View

Militrary Smart Watch for Men,1.85" HD/800mAh Battery Smart watches for Android/iOS (Bluetooth Call Answer/Calls)Fitness Tracker,100+ Sports/LED Flashlight/IP68 Waterproof/Sleep Tracker Smartwatch

$79^.99

Free Shipping

Quick View

Smart Watches for Women (2 Bands), 1.85" HD Smartwatch for Android iPhone with Bluetooth Calls (Make/Answer), Heart Rate SpO2 Sleep Monitor, 120+ Sports Modes, IP68 Waterproof, 7-Day Battery

$115^.99

Free Shipping

Volume Discounts:$112.99 - $115.99

Quick View

Men's Smartwatch 2-Inch HD Display 100M Waterproof Fitness Watch with Bluetooth Call Answer/Dial 400mAh Battery 70-Day Standby 100+ Sports Modes HR BP SpO2 Sleep Monitoring IP69K 10ATM

$48^.78

Free Shipping

Quick View

Smart Watch for Women for iPhone Android:1.85" Smartwatch Fitness Tracker | Make/Answer Call Sleep Heart Rate SpO2 Blood Pressure Monitor IP68 Waterproof 120+Sport Mode 1000mAh Battery 2Bands

$72^.99

Free Shipping

Volume Discounts:$69.99 - $72.99

Quick View

GPS Smart Watch for Men (Answer/Make Calls), 2.01'' Military Rugged | Compass Smartwatch with 10-Day Battery, Heart Rate, Sleep Tracking, 100+ Sports Modes, 2 Straps

$68^.99

Free Shipping

Quick View

$72^.99

Free Shipping

Volume Discounts:$69.99 - $72.99

Quick View

1.85" Big Screen Military Smart Watch for Men with Flashlight, 930mAh Large Battery, IP68 Waterproof, Bluetooth Calling, 114 Sports Modes, Heart Rate/Sleep Monitor for iPhone & Android

$109^.99

Free Shipping

Volume Discounts:$106.99 - $109.99

Quick View

Smart Watch for Women, Make/Answer Call, 1.85" HD Display Fitness Tracker | Heart Rate & Sleep Monitor, 1000mAh Battery, 2 Bands, DIY Dial, Female Cycle Tracking, 100+ Sports, IP68 Waterproof

$85^.99

Free Shipping

Quick View

Smart Watches for Men 1000mAh 1.85" HD Military IP68 LED Light Sport | Smartwatch Large Battery Big Touch Screen 110+ Sports Modes Waterproof Build-in LED Light Multifuntional Rugged

$94^.99

Free Shipping

Quick View

Watch for Women,Fitness Smartwatch,Fitness Watch Tracker with 2 Bands | 120+Sport Mode/30 Day+Battery Life/SpO2 Sleep Heart Rate Monitor/IP68/Compatiblefor iPhone&Android/Bluetooth Make/Answer Call

$97^.99

Free Shipping

Quick View

Halo Premium Metallic Smartwatch, 1.43" AMOLED Display, 7 Day Battery, BT Calling (Make/Answer), Dust & Water Resistant, 100+ Sport Modes, NoiseFit App Supprt, 1 Year Warranty

$74^.99

Free Shipping

Volume Discounts:$71.99 - $74.99

Page 1/15

Find what you were looking for?