MAXDATA 400M Guide D'utilisation page 123

Battery
Q:
My battery operation time isn' t as long as it should be. Why?
A:
The battery is heat sensitive and can only be charged to its maximum if the
battery and its environmental temperature is within 15-25°C (59-77°F). The
more the temperature deviates from this range during recharging, the less chance
there is for the battery to be fully charged. In order to recharge the pack to its full
capacity, users are requested to cool down the unit by unplugging the AC
Adapter. Wait until it is cooled down, then plug in the AC Adapter to start
recharging again.
Q:
I didn' t use my spare battery for a few days. Even though it was fully recharged,
there wasn' t as much power left as a newly charged one. Why?
A:
The batteries will self-discharge (2-5% per day for NiMH, and 1% per day for
Li-Ion) when they are not being recharged. To make sure a battery pack is fully
charged, recharge before use. Always keep the battery inside the notebook and
have the AC adapter connected whenever possible.
Q:
I didn't use my spare battery for months. I have problem in recharging it.
A:
If you happen to leave your battery pack to go through an extended period of self-
discharge, say more than three months, the battery voltage level will become too
low and needs to be Pre-Charged (to bring the battery voltage level high
enough) before it can automatically (for Li-Ion only) resume its normal Fast
Charge. Pre-Charge may take 30 minutes. Fast Charge usually takes 2~3
hours.
After completion of Pre-Charge, NiMH battery pack will exhibit some
abnormal behavior during Fast Charge. This is the characteristics all NiMH
rechargeable battery. What you experience is a pre-matured termination of
recharge. After leaving your battery pack un-used (in storage) for months, the
first couple of (Pre-Charge) recharge will last for a relatively short while, say
10 minutes, and recharge will terminate prematurely and indicate incorrectly that
the pack is fully charged. In reality, the battery is not fully recharged. If this
happens, take the battery pack out and return it back for recharging. Repeat this
take-out and return-back operation until the pack is actually being recharged. A
rule of thumb to tell if the recharge is "real" or "fake" is as follows. A "real"
recharge will generate heat, while a "fake" recharge will not.
Page 6-2
Information in this document is subject to change without notice!!!
Model 400M & 700T User's Manual