rechargeable batteries

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Low-self-discharge AA batteries?

Rechargeable AAA batteries with charger?

NiMH vs lithium-ion batteries?

How many recharge cycles?

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DC 19V 4.74A 90W Power Supply Power Adapter Charger Universal 100-240V 50/60Hz AC Input for Amplifier Laptop DAC

$51^.27

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Android 13.0 TV Box 2025, X88PRO 13 Android 13.0 TV Box 6K 8K Wi-Fi 6 4GB RAM 64GB ROM, Smart Box RK3528 Quad-Core 2.4G/5G Wi-Fi Bluetooth 5.0 USB 3.0 with Mini Wireless Keyboard

$89^.99

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C25 Bluetooth 5.3 Audio Adapter, 2-in-1 Transmitter & Receiver for TV/Car/Speaker AUX to Wireless, 10m Range, 13H Tx / 17H Rx Battery Plug & Play for Home Stereo, Airplane, Gym

$50^.35

More options from $50.34 - $75.89

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Elgin Rumble Gen 2 Bluetooth Earbuds, 31 dB Noise Reduction with Fusion Tips, IP67 Waterproof Wireless Earplugs, OSHA Compliant ANSI Certified Hearing Protection, 20 Hour Battery, Noise Canceli

$152^.99

$5.99 Shipping

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BT-108 Bluetooth 5.4 Audio Adapter, 3-in-1 Transmitter & Receiver with Dual-Link Connect 2 Headphones at Once, AUX to Wireless for TV/Car/Speaker 200mAh Battery, 10H RX / 6H TX

$58^.52

More options from $58.51 - $62.50

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UGREEN Bluetooth 5.4 3.5mm AUX Audio Receiver with Noise Cancelling Mic, Wireless Car Aux Bluetooth Adapter for Vehicle Stereo Home Wired Speaker Amplifier, 15H Long Play Battery Life

$16^.60

More options from $16.60

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T68 Bluetooth 5.3 Audio Adapter, 2-in-1 Transmitter & Receiver with LED Display 300mAh Battery, 10m Range, AUX to Wireless for TV/Car/Speaker Type-C, 7.5H RX / 5H TX

$50^.30

More options from $50.28 - $53.85

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GT82 Bluetooth 5.4 Audio Adapter, 2-in-1 Transmitter & Receiver with TF Card & Voice Call Support 300mAh Battery, 10m Range, AUX to Wireless for TV/Car/PC Plug & Play

$51^.25

More options from $51.23 - $76.89

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Bluetooth/FM Radio/MP3 Player Portable Wireless Speaker (Black)

$59^.99

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Portable Bluetooth Speaker Loud Wireless 60W Peak Waterproof Outdoor

$85^.99

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JS13 Bluetooth 5.4 Audio Adapter, 2-in-1 Transmitter & Receiver for TV/Car/Speaker Long Battery Life (16.5H RX / 12H TX), 10m Range, AUX to Wireless Plug & Play

$50^.39

More options from $50.38 - $53.95

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Stereo Wireless in Ear Monitor System 2.4G Wireless IEM System with Transmitter Clip on Receiver Automatic Pairing in-Ear Monitoring for Church,Stage,Live Performance (M6S)

$76^.19

More options from $76.19

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Pillow Speaker for Sleeping, Mini Bone Conduction Bluetooth Under Pillow Speaker with 10 Soothing Sounds, Sleep Timer, TF Card Support for Side Sleepers & Deep Sleep

$22^.99

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JS58 Mini Bluetooth 6.0 Audio Transmitter Receiver, 2-in-1 Wireless Audio Adapter, TX/RX Dual Mode, 10m Transmission Range, 150mAh Battery, Type-C Charging

$25^.44

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JBL Boombox 3 - Portable Bluetooth Speaker IPX7 Waterproof, 24 Hours of Playtime (Black)

$380^.99

$499.95

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AJMRTC 2in1 Bluetooth 6.0 Transmitter Receiver, 3.5mm AUX TX/RX Wireless Audio Adapter,10M Range for Airplane Car TV Switch Headphones Speakers, Builtin 300mAh Battery

$39^.99

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Bluetooth Receiver 3.5mm Aux Car Adapter Wireless Audio Receiver for Home Stereo

$12^.69

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XT Extreme Wireless Speaker, Splash Proof, Drop Proof, Dirt Proof IP64 Rating, Carabiner Clip, Built-in Speakerphone, Works with iPhone, Android, Bluetooth Devices, HXP430BL Blue

$59^.99

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AptX Bluetooth 5.4 2-in-1 Audio Transmitter Receiver Adapter, Support One-to-Two Pairing, AUX 3.5mm & RCA Dual Output Wireless Audio Dongle for TV Car Home Speaker

$47^.78

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2-in-1 Bluetooth 4.2 Wireless Audio Transmitter Receiver Adapter, Portable 3.5mm AUX Bluetooth Audio Converter for Audio Player, TV, Car Speaker, Home Stereo, Bluetooth Audio Adapter PK B6

$20^.33

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Bluetooth V5.4 Receiver for Speaker Home Stereo with 3.5mm AUX/RCA

$37^.99

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Bluetooth Total 2 XLR Equipped Rechargeable Bluetooth Receiver for Mixing Desk Audio Mixer Setups and Active PA Systems

$97^.99

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Bluetooth 5.4 Audio Transmitter Receiver, Wireless 2-in-1 Adapter with Dual Headphone TX & Dual Phone RX, 320mAh Battery, 11-11.5H Runtime, 3.5mm AUX, for TV Car Audio PC & Airplane

$51^.21

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Bluetooth Speaker Wireless, IPX7 Waterproof Portable Speaker Outdoor

$72^.99

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Dual iW-30 Bluetooth Receivers with 1/4" TS Plug, BT 5.3 Wireless Audio Adapter, 48kHz/24bit Stereo Audio, for Audio Mixer, PA Speaker, DJ System,165ft Range,15H Battery Life(2 Pack for Stereo)

$124^.99

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Wireless Induction Speaker 5-in-1 Bluetooth Speaker with Phone Stand | Stereo Sound, 3500mAh, USB Wired Charging, 8 RGB Lights, 360° Adjustable Holder for iPhone/Android/iPad, Gifts for Men Women

$43^.99

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C86S Bluetooth 5.4 Audio Transmitter Receiver, 2-in-1 Wireless Adapter with Dual Phone RX & Dual Headphone TX, 300mAh Battery, 10-11.5H Runtime, 3.5mm AUX

$54^.10

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Bluetooth 6.0 Receiver, Bluetooth Adapter for Old Receiver, Low Latency, 24-Hour Battery Life with AUX 3.5mm/RCA, HiFi Wireless Audio Adapter for Speakers/Home Music Streaming Stereo System

$51^.99

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Bluetooth 6.0 Receiver, Bluetooth Adapter for Old Receiver, Low Latency, 24-Hour Battery Life with AUX 3.5mm/RCA, HiFi Wireless Audio Adapter for Speakers/Home Music Streaming Stereo System

$51^.99

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2.4GHz Wireless Guitar System Transmitter Receiver Rechargeable LED Display 40m

$49^.99

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BA02A Bluetooth Audio Transmitter Receiver, 3.5mm Bluetooth 5.3 Adapter with 0.96" Color Display, Dual-Mode TX/RX, Built-In Rechargeable Battery for Airplane, TV and Car

$56^.91

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Bluetooth 5.0 Audio Transmitter Receiver Adapter, 2-in-1 Wireless 3.5mm aptX Low Latency Stereo Audio Adapter for Home Sound System/TV/PC/Tablet/Speaker Headphone

$17^.29

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In-Ear Wireless Invisible Dual Hearing Aid Rechargeable Charging Case, 35-48H Battery, Sound Amplifier for Seniors

$96^.08

More options from $96.08 - $101.94

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MEDca Bluetooth Hearing Amplifier for Adults - Rechargeable Personal Sound Amplifier with Smart App, Noise Reduction, LED Charging Case, 5 Volume Levels, Type-C Charging, Wireless Calls & Music

$269^.99

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UGREEN Bluetooth 5.4 3.5mm AUX Audio Receiver with Noise Cancelling Mic, Wireless Car Aux Bluetooth Adapter for Vehicle Stereo Home Wired Speaker Amplifier, 15H Long Play Battery Life

$21^.05

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Portable Bluetooth Speaker, Waterproof IP67

$76^.99

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