Related by context. Frequent words. (Click for all words.) 74 rechargeable battery 69 rechargeable batteries 67 NiMH batteries 67 Lithium ion battery 66 battery powered 65 Li ion battery 64 batteries 63 Rechargeable 63 lithium ion battery 63 NiMH 61 Lithium Ion 61 rechargeable lithium ion battery 61 AA batteries 61 lithium polymer battery 61 recharger 60 Lithium Ion battery 60 Li Ion 59 alkaline batteries 58 Lithium ion 57 Energizer ® 57 battery 57 battery chargers 57 battery charger 56 Li ion 56 lithium ion 55 lithium ion batteries 55 battery packs 55 lithium battery 55 charger 55 Li ion batteries 54 recharges 54 #mAh [001] 54 lithium batteries 54 recharging 53 refillable 53 Battery Pack 53 DMFC 52 chargers 52 Lithium ion batteries 52 cordless 52 rechargeable lithium ion batteries 51 mAh 51 lithium iron 51 acid batteries 50 AC adapter 50 supercapacitor 50 supercapacitors 50 recharged 49 user replaceable 49 LED 49 portable 49 LEDs 49 ultra compact 49 dimmable 49 LED lamps 49 LED lamp 49 nickel metal hydride 49 Batteries 48 Powermat 48 ultracapacitors 48 removable battery 48 volt outlet 48 electrically powered 48 capacitor 48 #mAh battery [001] 48 electrically driven 47 waterproof 46 volt battery 46 #v [001] 46 volt 46 light emitting diodes LEDs 46 hybrid electric 46 adapter 46 LED bulbs 46 HEVs 46 foldable 46 AAs 46 #V [001] 45 swappable 45 AC adapters 45 USB port 45 OLED display 45 Duracell 45 inverter 45 capacitors 45 mAh battery 45 watt 45 light emitting diode LED 45 solar powered 45 LED bulb 45 compact fluorescent 45 Flashlights 45 MP3 player 44 USB 44 wall socket 44 recharge 44 Bluetooth headset 44 #V DC 44 LED lighting 44 pico projector 44 electric