Martel Electronics BetaGauge 3II - Manual (Page 174)

A-9 Battery Care/Maintenance
Quick Charge Pack (optional)
The quick charge battery pack is designed with special
discharge circuitry that can cycle the battery to a
discharged state before recharging. This cycling
prevents battery failure due to the memory effect of
NiCd batteries.
The quick charge battery pack requires the high
capacity quick charger for proper charging. The charger
for the quick charge battery pack is a high capacity
charger that can fully charge the battery pack from a
fully discharged state within 90 minutes. Quick charge
battery packs are available for non-intrinsically safe
BetaGauge II calibrators (contact Factory Sales for
more information).
You can re-charge the quick charge battery pack while
the pack is installed or removed from the calibrator.
Procedure
To charge the quick charge battery pack:
1. Plug the proper charger into the jack at the top of
the battery pack. A red LED indicator illuminates
indicating that power is available to the battery
pack, and that the battery pack is under fast charge.
2. After connecting the charger to the quick charge
battery pack, initiate the discharge (or refresh)
cycle by inserting a small non-conductive pin in the
hole marked Battery Refresh Enable. This initiates
the discharge cycle prior to charging.
NOTE: It is not necessary to perform the refresh
on each charge cycle. The recommended interval
for using the discharge cycle is about every 10 to
15 charges.