How To Choose The Right Batteries For Your Wireless Mics, IEM's and Other Pro-Audio Apps

Besides a professional battery charger,  the proper choice of  batteries is key to the success of using rechargeable batteries for wireless mics, IEM's and other pro-audio applications.


In this article we make it easy to pick the winners.


There are three main factors in determining which battery to use:


  • Capacity of battery and required run-time
  • Type of device (wireless mics, IEM's, hearing assist, remotes, etc)
  • Dimension sensitivity of device


Listed below are three time-tested pro-grade rechargeable AA batteries that we've been supplying the pro-audio industry for over 20  years.  Check out the main differences and then we'll explore the commonly asked questions regarding the application.

ANSMANN 5035212-US SLIMLINE

Ansmann AA 2850 High Capacity Slimline

  • High Capacity 

  • Slimline - fits all wireless, even dimension sensitive devices (some Shure, Audix and Audio Technica models)

  • Must remain on charger until ready for use due to 2% per day self discharge

  • Up to 1000 full capacity recycles (recharges)

  • Up to 12 hours of runtime in wireless mics

ANSMANN 2850 HYBRID

Ansmann AA 2850 High Capacity Hybrid

  • New version of the Standard 2850 High Capacity 
  • Highest true capacity available
  • Fits most wireless, including Sennheiser, AKG, Telex, Lectrosonics, most Shure and Audio Technica
  • Only 5% per month self discharge
  • Up to 1000 full capacity recycles (recharges)
  • Up to 14 hours of runtime in wireless mics
  • Excellent for remotes, hearing assist devices - any device that is left dormant for long periods of time
Fujitsu Max E Pro AA low Discharge

Fujitsu AA 2000 Low Discharge 

  • Formerly Ansmann Max E Pro

  • Medium Capacity

  • Fits all wireless, even dimension sensitive devices

  • Extremely low self discharge - 1% per month

  • Over 1500 full capacity recycles (recharges)

  • Up to 5 hours of runtime in wireless mics

  • Excellent for remotes, hearing assist devices - any device that is left dormant for long periods of time

  • Should I try to get multiple uses on one charge?

    No. Regardless of battery choice, always start with 100% charged batteries to avoid run-time miscalculations. Whether you've used it for 2 hours or 12, return to the charger and charge it to 100%

  • Is there any harm to leaving the batteries on the charger for long periods of time?

    No.  All the battery types can be left on a professional grade charger that switches to trickle charge and keeps the batteries "topped off." If more than 3 months, then we suggest you remove the batteries and charge them at least every 3-6 months.


    With the Ansmann Hybrid and  Fujitsu low discharge battery, these batteries can be charged ahead of time and stored. This is ideal for remote applications when a charger is not available. Ansmann Slimlies should always be left on the charger until ready for use.

  • Why does my battery show less than 100% on the mic's battery meter?

    Most battery meters are calibrated to alkaline 1.5 Volts  instead of 1.2 Volts. An alkaline battery will have a gradual discharge rate steadily dropping down from 1.5V.  A pro-grade rechargeable will start at about 1.4 Volts, drop down to 1.2 volts within the first 30 minutes and remain constant for the duration of the run-time and than quickly drop off.


    The rule of thumb is know your run-time requirements.  If, for example, you are a church with multiple services on Sunday and require 6-7 hours of usage out of a battery, use a higher capacity battery that provides 12-14 hours. 

  • How much money will I save by using rechargeables?

    A lot.  Depending on your battery usage, pro-grade rechargeables need to be replaced about every two to five years.  Do the math. What are you spending on throw-away batteries every year?

  • I can save a few more dollars if I just use consumer grade batteries. Why buy Ansmann?

    Sure. You can use consumer grade rechargeables and join the "I tried rechargeables and they don't work club." Save yourself the aggravation and buy pro-grade rechargeable batteries and chargers. For a few dollars more, you get no compromise in performance.

Questions?


Call me at 800-648-7239 or email at dschliep@horizonbattery.com

I'll be glad to help.


David Schliep

Horizon Battery


P.S. We also offer a FREE Rechargeable Evaluation. And product discounts.