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UPS with automatic voltage regulation?

Home battery backup systems?

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How long do backups last?

3.7V/750mAH Replacement Battery for Sony NW-S710, NWZ-S600, NWZ-S600F, NWZ-S610, NWZ-S615, NWZ-S615F, NWZ-S616, NWZ-S616F, NWZ-S618, NWZ-S618FBLK, NWZ-S716FRNC, NWZ-S716FSNC, NWZ-S738, NWZ-S738FBNC

$14^.99

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G4S MP3 Player for Kids, Android 14, Wi-Fi, Spotify, 32GB, Black | 4-inch IPS screen, up to 40-hour battery, parental controls, Google Play Store, Audible, Bluetooth and TF card up to 1TB.

$105^.99

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Volume Discounts:$102.99 - $105.99

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32GB MP3 Player with 90 Hours Long Battery Life,Bluetooth 5.0, Z6 Digital Audio Player with Sturdy and Durable Metal Frame, 2.4'' IPS Glass Screen,FM Radio,Support up to 256GB

$61^.49

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altec lansing hydramini wireless bluetooth speaker, ip67 waterproof usb c rechargeable battery with 6 hours playtime, compact, shockproof, snowproof, everything proof (black)

$20^.88

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96GB MP3 Player with 90 Hours Long Battery Life,Bluetooth 5.0,Z6 Digital Audio Player with Loud Speaker, 2.4'' IPS Portable Music Player,FM Radio,Voice Recorder Support up to 256GB(Black)

$81^.69

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96GB MP3 Player with 90 Hours Long Battery Life,Bluetooth 5.0,Phinistec Z6 Digital Audio Player with Loud Speaker, 2.4'' IPS Portable Music Player,FM Radio,Voice Recorder Support up to 256GB(Black)

$84^.69

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64GB MP3 Player with Bluetooth 5.3 Auto Reconnect, Zinc Alloy Body | Built-in Speaker & White Noise, 2.4" Screen, 45H Battery, Voice Recorder, FM Radio, Resume Playback, Up to 128GB microSD Card

$72^.99

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96GB MP3 Player with 90 Hours Long Battery Life,Bluetooth 5.0,Phinistec Z6 Digital Audio Player with Sturdy and Durable Metal Frame, 2.4'' IPS Glass Screen,FM Radio,Support up to 256GB (Black, 96, GB)

$86^.99

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64GB MP3 Player with Bluetooth 5.3, Speaker & Physical Buttons | Portable Music Player with FM Radio, Voice Recorder, Lanyard & Earphones, Only 1.2 oz, 40H Battery, Up to 128GB microSD Card

$67^.99

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32GB MP3 Player with Bluetooth 5.3 Auto Reconnect, Zinc Alloy Frame | Built-in Speaker & White Noise, 2.8" Touchscreen, 48H Battery, Resume Playback, Supports 128GB microSD Card, Metallic Purple

$67^.99

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64GB MP3 Player with Bluetooth 5.3, Speaker & Physical Buttons | Portable Music Player with FM Radio, Voice Recorder, Lanyard & Earphones, Only 1.2 oz, 40H Battery, Up to 128GB microSD Card

$66^.99

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Volume Discounts:$63.99 - $66.99

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32GB MP3 Player with Bluetooth 5.3 Auto Reconnect, Zinc Alloy Frame | Built-in Speaker & White Noise, 2.8" Touchscreen, 48H Battery, Resume Playback, Supports 128GB microSD Card, Metallic Purple

$67^.99

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Volume Discounts:$64.99 - $67.99

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X6 Home WiFi Remote Monitoring Camera - 1080P High Definition Infrared Night Vision Battery Camera

$26^.99

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Volume Discounts:$26.59 - $26.99

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M0 Pro MP3 Player with BluetoothHi-Res Portable Music PlayerDigital Audio Player 1.54 HD Touch Screen up to 10 Hour Battery Bluetooth and USB Type-C dongle 3.5mm Jacks

$365^.53

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Hi-Res Portable MP3 Player, M0 Pro Bluetooth Music Player, Support USB Type-C 3.5mm Jack, 1.54" HD Touch Screen, 8-Hour Long Lasting Battery, Compact Digital Audio Player, Red

$398^.85

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Top Up Reader 8g of a Long Battery Battery Sound Reader for Practical ABS (Spanish 1909 2018 New, )

$49^.41

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Volume Discounts:$47.81 - $49.41

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Top Up Reader 8g of a Long Battery Battery Sound Reader for Practical ABS (KJV, Indian English Accent English, 138 )

$49^.22

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Volume Discounts:$47.62 - $49.22

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Top Up Reader 8g of a Long Battery Battery Sound Reader for Practical ABS (Italian, KJV Music, Hebrew, 267 )

$47^.64

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Volume Discounts:$46.04 - $47.64

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Top Up Reader 8g of a Long Battery Battery Sound Reader for Practical ABS (Korean, World English KJV, )

$49^.27

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Volume Discounts:$47.67 - $49.27

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MP3 PLAYER, WATERPROOF, SPORTS, 8GB Memory, IPX8 Rating, USB Connection, Rechargeable Battery, Includes Earbuds, Perfect for Swimming, Running, Gym, Ergonomic Design, Sweatproof, Dustproof

$89^.99

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Clip-On Bluetooth MP3 Player 16GB Mini Sports Music Player with Clip, Bluetooth 5.0, 1.44" Screen, 20Hr Battery, Supports FLAC/APE/WAV, FM Radio, Voice Recorder, TF Card up to 128GB

$93^.01

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HiFi MP3 Player with Hi-Res Lossless Audio, Bluetooth 5.3 Portable Music Player, 64GB Memory, 3.5mm Balanced Output, Long Battery Life for High-End Headphones, UP to 256GB

$145^.99

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HiFi MP3 Player with Hi-Res Lossless Audio, Bluetooth 5.3 Portable Music Player, 64GB Memory, 3.5mm Balanced Output, Long Battery Life for High-End Headphones,UP to 256GB

$145^.99

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MP3 Player with 720P Camera, Multiple Formats, FM Radio, E Books, Alarm Clock, Stopwatch, Recording - Up to 128GB Expansion, 500mAh Battery (with 32G Memory Card)

$59^.76

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Volume Discounts:$58.16 - $59.76

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C5 HiFi Lossless Music Player 8GB MP3/MP4 Digital Audio Player with Bluetooth, Zinc Alloy Body, 1.8" TFT Screen, Supports FLAC/APE/WAV, 50Hr Battery, TF Card up to 128GB

$112^.35

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64GB Clip MP3 Player with Bluetooth 5.3: 15 Hrs Battery Mini Music Player, Earphones Included, 1000+ Songs Storage, No Phone Needed, Portable MP3 Players for Kids, Sports, Reading, Learning, Meetings

$51^.99

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Portable handheld battery spot welding machine for 18650 lithium batteries, welding of nickel sheets and nickel strips, aluminum oxide copper welding tip

$73^.99

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Volume Discounts:$73.59 - $73.99

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8000W high-power spot welding machine for welding 18650 lithium battery for mobile phones. Capable of welding with a thickness of 0.3mm.

$107^.99

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Volume Discounts:$107.59 - $107.99

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Portable dual-pulse battery spot welding machine, color screen digital display, mobile phone battery cell, 18650 lithium battery welding

$87^.99

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Volume Discounts:$87.59 - $87.99

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Battery Pack for Oculus Quest 2, Accessories for Oculus Quest 2 Headset, 5000mAh Extended Power Compatible with Meta Quest 2 Original Strap and Elite Strap Extended Play time VR Power Bank

$29^.99

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Volume Discounts:$29.59 - $29.99

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OSTENT High Capacity Quality Real 2200mAh 3.6V Lithium Ion Li-ion Polymer Rechargeable Battery Pack Replacement Upgraded Version for Sony PSP 1000 PSP-280 Console Video Games

$30^.96

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Volume Discounts:$30.56 - $30.96

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64GB MP3 Player with Bluetooth, Music Player with Built-in HD Speaker, MP3 Player for Kids, FM Radio, Voice Recorder, HiFi Sound, E-Book Function, Earphones Included Jet Black

$45^.69

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wusu HeltecBMS 12S Lithium Iron Phosphate/Lithium Polymer Battery 30A Battery Management System

$36^.99

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Volume Discounts:$36.59 - $36.99

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MP3 Player 128GB with Speaker Earphone Portable HiFi Lossless Sound MP3 Mini Music Player Voice Recorder E-Book HD Screen 1.8 inch Black

$49^.89

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PS5 wireless gamepad backplate battery 3600mAh charging stand charger - four-in-one rechargeable battery

$45^.99

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Volume Discounts:$45.59 - $45.99

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32GB MP3 Player with 90 Hours Long Battery Life,Bluetooth 5.0, Z6 Digital Audio Player with Sturdy and Durable Metal Frame, 2.4'' IPS Glass Screen,FM Radio,Support up to 256GB

$61^.49

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