The best replacement for mah is wh.

The best alternatives to mah are rated as following:
★★★★★  wh
★★★★  ah
★★★  nimh
★★★  ma
★★  amps
★★  volts
★★  mwh
★★  whr
★  voltage
★  mah
★  kwh
★  900 mah
★  amp hours
★  2000 mah
  8800 mah
  750 mah
  1200 mah
  800 mah
  ah batteries
  kar
  2200 mah
  2500 mah
  5200mah
  2100 mah
  1800 mah
  1500 mah
  5200 mah
  4800 mah
  1100 mah
  watt hour
  4400 mah
  amp

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Speaking about mah, one probably shouldn't forget about batteries.

Other search terms related to mah and their ratings are:
★★★★★ batteries
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mah
wh
ah