The best replacement for batteries is alkaline.

The best alternatives to batteries are rated as following:
★★★★★  alkaline
★★★★  capacitors
★★★  regular batteries
★★★  fuel cells
★★  batteries
★★  cells
★★  nicad
★★  rechargeable batteries
★★  mains
★★  lithium
★★  lithium ion
★★  mains electricity
★  alkaline batteries
★  lead acid
★  duracell
★  name brand
★  agm
★  nimh
★  ultracapacitors
★  name brand batteries
★  bulbs
★  energizer batteries
★  lithium batteries
★  nimh batteries
★  car batteries
  agm batteries
  optima
  gel batteries
  supercapacitors
  12 volt batteries
  non alkaline batteries
  lithium ion batteries
  lipo batteries
  hydrogen
  dry cell
  flooded batteries
  stored energy
  energizer
  trojan batteries
  capacitor
  lead batteries
  die hard
  napa
  aaa
  seidio batteries
  nicd
  disposable
  rechargeable
  interstate
  deep cycle batteries

Your alternative for batteries is not listed? Suggest!
Speaking about batteries, one probably shouldn't forget about lithium.

Other search terms related to batteries and their ratings are:
★★★★★ lithium
★★★★ charger
★★★★ internal resistance
★★ top and side posts
★★ solar panels
★★ electricity
★ tools
generator
spark
You have in mind a companion for batteries and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of batteries in all years. Click on graph for more.
batteries
alkaline
capacitors