battery | Newegg.com

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UPS with automatic voltage regulation?

Home battery backup systems?

UPS vs power bank differences?

How long do backups last?

2 Pack Rechargeable Lithium-ion Replacement Battery for eufy E340 Video Doorbell Type-C Charge Cable, Upgraded 7000mAh Capacity

$106^.56

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Ring - Starter Set with Battery Doorbell and Indoor Cam - Satin Nickel and White

$69^.99

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eufy Security Video Doorbell Chime, Add-on Chime, Requires eufy Security Video Doorbell 2K (Battery Powered), Simultaneous Ringtone, Adjustable Volume, Only Works with HomeBase 2

$35^.99

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Tapo by TP-Link Smart Video Doorbell Camera with Chime, Battery or Wired, 2K QHD Color Night Vison, No Monthly Fee, 180° Ultra-Wide Head-to-Toe View, Ring Call, Free AI Detection, Local Storage

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Tapo by TP-Link Smart Video Doorbell Camera with Chime, Battery or Wired, 2K QHD Color Night Vison, No Monthly Fee, 180° Ultra-Wide Head-to-Toe View, Ring Call, Free AI Detection, Local Storage

$179^.99

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REOLINK Chime Plus Wireless Doorbell Chime, Indoor Plug-In Chime with 10 Ringtones, 5 Volume Levels & App Control, Compatible with Reolink Video Doorbell V2/V3, Battery & 2nd Gen

$24^.99

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Doorbell,Wireless Doorbell Battery Powered for Home Classroom Waterproof

$26^.99

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Battery-Free Wireless Remote Light Switch Kit 3 Switches + 1 Receiver, No Wiring, No Wi-Fi, for Hallway, Garage & Basement

$95^.66

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Smart Locker Lock, Bluetooth Fingerprint Padlock, Fast Finger Scan & Long Lasting Battery Lock for Gym, School & Employee Locker, Toolbox

$66^.99

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VE001 Keyless Entry Deadbolt, Electronic Keypad Lock, Satin Nickel | ANSI Grade 3 Security, 20 User Codes, Low Battery Alert, IP55 Waterproof, One Touch Lock, Anti-Peep Password & 2 Backup Keys

$62^.99

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Keyless Entry Keypad Deadbolt Lock with Handles, Matte Black | 20+ User Password, One-time Code, Auto Lock, Anti-Peeping Password, Low Battery Alert, ANSI Grade 3, for Front Door

$96^.99

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Volume Discounts:$93.99 - $96.99

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Self Powered Wireless Light Switch Kit Remote Light Switches Wireless No Wiring No Battery Kinetic Light Switch Wireless Radio Wall Switches for Home Lighting

$92^.66

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MOES Wireless Zigbee Smart Scene Button, Needs MOES Zigbee Hub, 9-Action | Zigbee2MQTT & ZHA Compatible, Magnetic Base Sticks to Metal Surfaces, 365-Day Battery Life, Tuya DIY Scene Switch

$58^.85

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TE001 Keyless Entry Deadbolt with Keypad for Front Door, Matte Black | ANSI Grade 3 Security, 20 User Codes, Low Battery Alert, IP54 Waterproof, One Touch Lock, Anti-Peep Password & 2 Backup Keys

$66^.99

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VE001 Keyless Entry Deadbolt, Electronic Keypad Lock, Satin Nickel | ANSI Grade 3 Security, 20 User Codes, Low Battery Alert, IP55 Waterproof, One Touch Lock, Anti-Peep Password & 2 Backup Keys

$62^.99

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Volume Discounts:$59.99 - $62.99

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Keyless Entry Keypad Deadbolt Lock with Handles, Matte Black | 20+ User Password, One-time Code, Auto Lock, Anti-Peeping Password, Low Battery Alert, ANSI Grade 3, for Front Door

$94^.99

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TE001 Keyless Entry Deadbolt with Keypad for Front Door, Satin Nickel | ANSI Grade 3 Security, 20 User Codes, Low Battery Alert, IP54 Waterproof, One Touch Lock, Anti-Peep Password & 2 Backup Keys

$66^.99

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Volume Discounts:$63.99 - $66.99

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Smart Locker Lock, Bluetooth Fingerprint Padlock, Fast Finger Scan & Long Lasting Battery Lock for Gym, School & Employee Locker, Toolbox

$66^.99

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TE001 Keyless Entry Deadbolt with Keypad for Front Door, Bronze | ANSI Grade 3 Security, 20 User Codes, Low Battery Alert, IP54 Waterproof, One Touch Lock, Anti-Peep Password & 2 Backup Keys

$66^.99

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Volume Discounts:$63.99 - $66.99

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TE001 Keyless Entry Deadbolt with Keypad for Front Door, Matte Black | ANSI Grade 3 Security, 20 User Codes, Low Battery Alert, IP54 Waterproof, One Touch Lock, Anti-Peep Password & 2 Backup Keys

$66^.99

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Volume Discounts:$63.99 - $66.99

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TE001K Keyless Entry Door Lock with Knob for Front Door, Matte Black | ANSI Grade 3 Security, 20 User Codes, Auto & One-Touch Lock, Anti-Peeping, IP54 Waterproof, Low Battery Alert, Easy Install

$116^.99

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IU-20 Code Door Lock, Electronic Door Knob with Keypad and Key, Auto Lock, Waterproof, Passage Function, Long Battery Life,50 Codes, Easy to use and Install for Office/Warehouse/Bedroom/Garage

$73^.99

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TE002 Fingerprint Deadbolt with Keypad for Front Door, Matte Black | 1-Second Fingerprint Unlock, ANSI Grade 3, 20 User Codes, Auto Lock, Anti-Peep Password, IP54 Waterproof & Low Battery Alerts

$76^.99

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Self-Powered Kinetic Wireless Light Switch Kit No Wiring, No Battery Remote Radio Wall Switches for Home Lighting

$95^.61

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Biometric Fingerprint Cabinet Lock, Black, 32x32mm, Modern Black Style, Battery Indicator, 360-Day Standby, 20 Capacity

$46^.99

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TE002 Fingerprint Deadbolt with Keypad for Front Door, Bronze | 1-Second Fingerprint Unlock, ANSI Grade 3, 20 User Codes, Auto Lock, Anti-Peep Password, IP54 Waterproof & Low Battery Alerts

$77^.99

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M6 Smart Video Doorbell Wireless WiFi, Mobile Remote, 2-Way Audio, Night Vision, 400mAh Battery, 150m Range

$61^.53

More options from $61.51 - $65.91

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TE001 Keyless Entry Deadbolt with Keypad for Front Door, Matte Black | ANSI Grade 3 Security, 20 User Codes, Low Battery Alert, IP54 Waterproof, One Touch Lock, Anti-Peep Password & 2 Backup Keys

$66^.99

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Wireless Light Switch and Receiver Kit, Ortis 300ft RF Range Wireless Wall Switches for Lights, Fans, Battery Included, No Wiring Needed, Light Almond

$44^.53

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C110 Fingerprint Keyless Entry Door Lock with 2 Lever Handles | Smart Deadbolt with Visual Display, Backlit Keypad, Auto Lock, 12-Month Battery, IP54 Waterproof, BHMA Grade 3, Black

$80^.99

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TE001K Keyless Entry Door Lock with Knob for Front Door, Matte Black | ANSI Grade 3 Security, 20 User Codes, Auto & One-Touch Lock, Anti-Peeping, IP54 Waterproof, Low Battery Alert, Easy Install

$89^.99

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Volume Discounts:$86.99 - $89.99

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Avorecta Wireless Remote Light Switch Kit, 1 Switch + 1 Receiver, Battery-Free Wireless Wall Switch, No New in-Wall Wiring, No Wi-Fi,for Bedroom, Garage, Closet

$42^.94

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Keyless Entry Door Knob with Keypad, Electronic Deadbolt Door Lock | Auto Unlock, Silent Mode, Low Battery Alert,100 Code, Easy Installation, Smart for Front Door, Bedroom, Office, Black

$79^.99

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Volume Discounts:$76.99 - $79.99

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Doorbell Camera Wireless, Head-to-Toe Video, 2K HD Live View, Two-Way Talk,Smart Video Doorbell with Chime,no Subscription,Battery Powered,Motion Detection &Alerts,Works with Alexa &Google(2.4G WiFi)

$110^.60

More options from $110.11 - $112.19

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Remote Control Outlets Outdoor Waterproof Indoor Wireless Light Switch | 3-Prong Dual Plugs In On Off Remote Outlet with 1 Outlet 1 Remote (Battery Included),6 Inch Cord, 100FT,15A/1875W, ETL Listed

$33^.99

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Volume Discounts:$30.99 - $33.99

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Wowstick 1F Pro Mini Precision Electric Screwdriver Cordless Lithium Battery Powered LED Light 56pcs Bits Steel Set Wowcase Bit Holder

$94^.99

More options from $94.99

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Volume Discounts:$93.59 - $94.99

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No-Drill 4.5" Dutch Lap Siding Mount Bracket Compatible with with Ring Battery Doorbell (Newest Retinal Models) Battery Doorbell 2K, Plus 2K & Pro 4K Snap-On Bracket

$46^.12

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