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    1. eBay
    2. Consumer Electronics
    3. Multipurpose Batteries & Power
    4. Battery Converters
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    Battery Converters

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    Shop by Category

    • Multipurpose Batteries & Power
    • Battery Converters
    • Battery Chargers
    • Battery Testers
    • Heavy-Duty Voltage Converters
    • Multipurpose AC to DC Adapters
    • Power Cables & Connectors
    • Rechargeable Batteries
    • Single Use Batteries
    • Other Multipurpose Batteries
    • Output Battery Size

      • AA
      • D
      • AAA
      • C
      • 6 V
    • Input Battery Size

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      • 9 V
      • 6 V
      • Coin Cell/Button
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    Shop by Output Battery Size

    Showing slide {CURRENT_SLIDE} of {TOTAL_SLIDES} - Shop by Output Battery Size

    • D

    • C

    • AA

    Shop by Input Battery Size

    Showing slide {CURRENT_SLIDE} of {TOTAL_SLIDES} - Shop by Input Battery Size

    • AA

    • AAA

    • D

    • Coin Cell/Button

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    • Auction

    • Buy It Now

    • Best Match
    • Time: ending soonest
    • Time: newly listed
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    List View

    1-48 of 1,149 Results

    • 18650 Li-Ion to 2x D-Cell Flashlight Adapter - Conversion - Nerf Blaster

      18650 Li-Ion to 2x D-Cell Flashlight Adapter - Conversion - Nerf Blaster

      C $10.76 to C $14.56
      33 watching
    • 2x18650 Li-Ion 3D-Cell Maglite Adapter - conversion kit w/ LED bulb option

      2x18650 Li-Ion 3D-Cell Maglite Adapter - conversion kit w/ LED bulb option

      C $25.32 to C $32.92
      14 watching
    • Battery Converter Adapter Tube Sleeve 1865O to 20700

      Battery Converter Adapter Tube Sleeve 1865O to 20700

      C $5.06 to C $6.33
    • EXELTECH XP600 power Inverter

      EXELTECH XP600 power Inverter

      C $200.03
      C $75.96 shipping
      or Best Offer
    • Fenix ALF-18 18650 to 21700 Battery Converter Adapter Tube Holder

      Fenix ALF-18 18650 to 21700 Battery Converter Adapter Tube Holder

      C $16.39
      Free shipping
    • Adapter For Black&Decker Stanley Porter-Cable Battery 18/20V To Craftsman 19.2V

      Adapter For Black&Decker Stanley Porter-Cable Battery 18/20V To Craftsman 19.2V

      C $23.23
      Was: C $25.81
      Free shipping
      or Best Offer
    • 70mV Joule Thief powered by peltier TEG with body heat, green LED

      70mV Joule Thief powered by peltier TEG with body heat, green LED

      C $73.42
      C $6.32 shipping
      19 sold
    • Adapter for DeWALT or Hercules 12v Max battery 12 gauge dock power connector

      Adapter for DeWALT or Hercules 12v Max battery 12 gauge dock power connector

      C $17.72
      142 sold
    • 10Pcs AAA to AA Size Cell Battery Converter Adapter Battery Holder Case Switch

      10Pcs AAA to AA Size Cell Battery Converter Adapter Battery Holder Case Switch

      C $3.60
      Was: C $4.00
      C $1.27 shipping
      or Best Offer
      191 sold
    • Storage Holder Connector Box for1S 2S 3S 4S 8S 3.7V 14500 AA 1.5V R6P Battery

      Storage Holder Connector Box for1S 2S 3S 4S 8S 3.7V 14500 AA 1.5V R6P Battery

      C $3.03 to C $6.32
      Free shipping
    • 4 PANASONIC ENELOOP BATTERY ADAPTER AA R6 TO C R14 SIZE CONVERTER SPACER CASE

      4 PANASONIC ENELOOP BATTERY ADAPTER AA R6 TO C R14 SIZE CONVERTER SPACER CASE

      5 out of 5 stars
      (8)8 product ratings - 4 PANASONIC ENELOOP BATTERY ADAPTER AA R6 TO C R14 SIZE CONVERTER SPACER CASE
      C $11.51
      Free shipping
      165 sold
    • NEW Joule Thief SMD DC/DC 3528 white Led flashlight, No toroid inductor.

      NEW Joule Thief SMD DC/DC 3528 white Led flashlight, No toroid inductor.

      C $12.65
      C $6.32 shipping
      28 watching
    • 2x 18650 Li-Ion to 4D-Cell Maglite Adapter - Flashlight conversion w/ LED option

      2x 18650 Li-Ion to 4D-Cell Maglite Adapter - Flashlight conversion w/ LED option

      C $25.32 to C $32.92
      10 watching
    • OREI UltraHD 4K @ 60 Hz 1x2 HDMI Splitter 1 in 2 Out HDMI 2.0, HDCP 2.2, 18 Gbps

      OREI UltraHD 4K @ 60 Hz 1x2 HDMI Splitter 1 in 2 Out HDMI 2.0, HDCP 2.2, 18 Gbps

      C $50.63
      C $16.22 shipping
      76 sold
    • Battery Eliminator LR6 AA Usb Power Supply Cable Replace 1-4 Pcs 1.5VAA Battery

      Battery Eliminator LR6 AA Usb Power Supply Cable Replace 1-4 Pcs 1.5VAA Battery

      C $12.93
      Was: C $15.20
      Free shipping
    • BiXPower 12V ( 10V ~ 17V) DC to 110V AC 155W Modified Sine Wave Power Inverter

      BiXPower 12V ( 10V ~ 17V) DC to 110V AC 155W Modified Sine Wave Power Inverter

      C $37.92
      C $37.92 shipping
    • world unique white LED joule thief with Toroid Style PCB Inductor

      world unique white LED joule thief with Toroid Style PCB Inductor

      C $25.31
      C $6.32 shipping
    • Orei Wireless HDMI Extender Transmitter & Receiver Dongle 1080P Kit Up to 100 ft

      Orei Wireless HDMI Extender Transmitter & Receiver Dongle 1080P Kit Up to 100 ft

      C $251.93
      C $19.86 shipping
    • world smallest Nano Joule Thief with SMD cool white Led flashlight, startup 0.9V

      world smallest Nano Joule Thief with SMD cool white Led flashlight, startup 0.9V

      C $12.65
      C $6.32 shipping
      15 watching
    • 12 pcs Parallel Adapter Battery Holder Case Box Convertor 3 AA/LR6 to 1 D Size

      12 pcs Parallel Adapter Battery Holder Case Box Convertor 3 AA/LR6 to 1 D Size

      C $12.65
      C $4.43 shipping
      875 sold
    • one slot plastic converter holder clip for 1.5V AA R6 LR6 14500 3.6V 3.2V cell

      one slot plastic converter holder clip for 1.5V AA R6 LR6 14500 3.6V 3.2V cell

      C $5.56 to C $17.96
      Free shipping
    • 2PCS Plastical Battery Holder Box Case 3 AAA To 18650 Battery Converter In P bk

      2PCS Plastical Battery Holder Box Case 3 AAA To 18650 Battery Converter In P bk

      C $2.84
      Free shipping
      or Best Offer
    • Plastic storage holder connecting case box for 1S 2S 2P 3S 4S 4P18650 battery

      Plastic storage holder connecting case box for 1S 2S 2P 3S 4S 4P18650 battery

      C $2.52 to C $6.32
      Free shipping
    • New Battery Converter Adapter Tube Holder for Flashlight Torch ( White )

      New Battery Converter Adapter Tube Holder for Flashlight Torch ( White )

      C $8.85
      Free shipping
      4 watching
    • 3Pcs 3x AA to D Size Battery Adapter Converter Holder Case BoxSJCA

      3Pcs 3x AA to D Size Battery Adapter Converter Holder Case BoxSJCA

      C $2.51 to C $3.31
      Free shipping
    • EXELTECH TRUE SINE WAVE POWER INVERTER

      EXELTECH TRUE SINE WAVE POWER INVERTER

      C $348.15
      Only 1 left!
    • Storage holder connecting case box for 1S 2S 3S 4S LR03 R03 AAA 10440 battery

      Storage holder connecting case box for 1S 2S 3S 4S LR03 R03 AAA 10440 battery

      C $2.52 to C $5.94
      C $1.27 shipping
    • Hold Four 4 Li-ion Lithium 18650 DIY Battery Box Holder Case With 8 Pins Contact

      Hold Four 4 Li-ion Lithium 18650 DIY Battery Box Holder Case With 8 Pins Contact

      C $4.29
      C $5.05 shipping
      or Best Offer
      533 sold
    • AA to D Size Cell Battery Converter Adapter Holder Batteries Case Switcher hot

      AA to D Size Cell Battery Converter Adapter Holder Batteries Case Switcher hot

      C $10.70
      Free shipping
      or Best Offer
    • 4 pcs Parallel Adapter Battery Holder Case Box Convertor 3 AA/LR6 to 1 D Size

      4 pcs Parallel Adapter Battery Holder Case Box Convertor 3 AA/LR6 to 1 D Size

      C $3.28
      C $4.43 shipping
      1,069 sold
    • 3S series AAA 10440 R3 cell black white battery spacer converter adapter holder

      3S series AAA 10440 R3 cell black white battery spacer converter adapter holder

      C $3.28 to C $5.30
      Free shipping
    • 10x DIY 2x 18650 3.7V Battery Holder Storage Box Case W/ DC Power Plug 5.5x2.1mm

      10x DIY 2x 18650 3.7V Battery Holder Storage Box Case W/ DC Power Plug 5.5x2.1mm

      C $15.18
      C $5.05 shipping
      or Best Offer
    • 18650 Li-Ion to Sub C cell Battery Adapter Streamlight Stinger

      18650 Li-Ion to Sub C cell Battery Adapter Streamlight Stinger

      C $33.55
      or Best Offer
      5 watching
    • one slot clip plastic connector holder for LR03/R03/AAA/10440/ DRY ICR IFR kit

      one slot clip plastic connector holder for LR03/R03/AAA/10440/ DRY ICR IFR kit

      C $16.31
      C $3.80 shipping
    • White Parallel AA Battery Adapter Holder 1.5V Cartridge Converter 3 AA t frUSBB

      White Parallel AA Battery Adapter Holder 1.5V Cartridge Converter 3 AA t frUSBB

      C $3.32
      Free shipping
      or Best Offer
    • 100pcs 1X 9V 9 Volt Cell Battery Clip Holder Box DC Case with wire Lead DIY

      100pcs 1X 9V 9 Volt Cell Battery Clip Holder Box DC Case with wire Lead DIY

      C $63.29
      Free shipping
      or Best Offer
    • 4 Pcs 2 AA to D Size Battery Adaptor Holder Switcher Case Box Converter Supplies

      4 Pcs 2 AA to D Size Battery Adaptor Holder Switcher Case Box Converter Supplies

      C $3.24
      Was: C $3.41
      C $1.25 shipping
      313 sold
    • AA to D C, AAA to AA size battery converter adapter holder switcher plastic case

      AA to D C, AAA to AA size battery converter adapter holder switcher plastic case

      C $3.41 to C $6.32
      Free shipping
      84 sold
    • 12V Battery Low Voltage cut off On Switch Controller Excessive Protection Module

      12V Battery Low Voltage cut off On Switch Controller Excessive Protection Module

      C $50.64
      Free shipping
      or Best Offer
    • 100x White CR2032X2 Button Coin Cell Battery Holder Case on/off Switch Wire Lead

      100x White CR2032X2 Button Coin Cell Battery Holder Case on/off Switch Wire Lead

      C $63.29
      Free shipping
      or Best Offer
    • 20PC 2S TWO slot clip convertor connector holder for LR03/R03/AAA/10440 battery

      20PC 2S TWO slot clip convertor connector holder for LR03/R03/AAA/10440 battery

      C $11.38
      C $3.80 shipping
    • High Voltage Generator Module AC 220V High Voltage Transformer Step-up Power

      High Voltage Generator Module AC 220V High Voltage Transformer Step-up Power

      C $14.10
      C $0.62 shipping
    • 4* AAA Battery ON / OFF Switch Box Holder Case with Wire Length: 150mm x 1

      4* AAA Battery ON / OFF Switch Box Holder Case with Wire Length: 150mm x 1

      C $7.58
      C $9.50 shipping
      or Best Offer
    • 2PC  AAA to AA size battery converter case adapter holder 10440 to 14500 spacer

      2PC AAA to AA size battery converter case adapter holder 10440 to 14500 spacer

      C $3.24
      Free shipping
      269 sold
    • 5PCS AA to C Size Cell Battery Converter Holder Case Adapter Switcher Plastic

      5PCS AA to C Size Cell Battery Converter Holder Case Adapter Switcher Plastic

      C $3.35
      Was: C $3.53
      C $1.25 shipping
      166 sold
    • 6/12/4PC BATTERY CONNECTOR CASE STORAGE HOLDER BOX FOR 3S / 4P / 4S18650

      6/12/4PC BATTERY CONNECTOR CASE STORAGE HOLDER BOX FOR 3S / 4P / 4S18650

      C $9.74 to C $34.68
      C $3.80 shipping
    • Fit WORX 20V 4-PIN Battery Adapter Suitable for Makita 18V Li Battery Converter

      Fit WORX 20V 4-PIN Battery Adapter Suitable for Makita 18V Li Battery Converter

      C $26.32
      C $2.52 shipping
      or Best Offer
    • THREE slot plastic converter holder clip for  LR6 R6 AA 14500 1.5V 3.6V 3.2V kit

      THREE slot plastic converter holder clip for LR6 R6 AA 14500 1.5V 3.6V 3.2V kit

      C $9.85 to C $30.13
      C $3.80 shipping

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