Tronic TLG 1000 B3 - Manual (Page 29)

33 GB/MT
Preparing the product for use
Batteries can become hot during
charging. Never touch hot batteries! You could
suffer burn injuries.
Pull the mains plug of the universal battery
charger out of the mains socket and allow the
batteries to cool.
Then you can take the charged batteries out of the
universal battery charger.
Q Average charging times
The length of time required to charge a battery
depends on its type, age and residual charge
capacity. The average charging times can be taken
from the following table. Please note that the listed
times are for guidance only.
Rechargeable battery type AAA
Capacity Ni-MH Ni-Cd
900 mAh 151 Min. ---
300 mAh --- 50 Min.
Rechargeable battery type AA
Capacity Ni-MH Ni-Cd
2500 mAh 210 Min. ---
800 mAh --- 67 Min.
Rechargeable battery type C
Capacity Ni-MH Ni-Cd
4000 mAh 336 Min. ---
1800 mAh --- 151 Min.
Rechargeable battery type D
Capacity Ni-MH Ni-Cd
4500 mAh 378 Min. ---
1800 mAh --- 151 Min.
Rechargeable battery type 9 V block
Capacity Ni-MH Ni-Cd
200 mAh 240 Min. ---
100 mAh --- 120 Min.
Q Calculating the charging time
Charging time (Min.) =
Battery capacity (mAh) x 1.4 x 60
Charging current from charger (mA)
Q Automatic charging control/
trickle charging
This universal battery charger controls the charging
time for batteries type Ni-Cd and Ni-MH separately.
This control is based on the –Δ U (“minus delta U”)
process.
The delta Δ symbol refers to a mathematical concept
based on “differences“.
In this case, “minus delta U“ means a negative
voltage difference.
This method of recognising the completion of charg-
ing makes use of the following effect:
The voltage of a battery being charged using a
constant current continues to rise. As it becomes
completely charged, its voltage reaches a maximum
and then falls slightly if it continues to receive charge.
This slight voltage drop is detected by the electronics
and the normal charging process is halted. The uni-
versal battery charger switches itself automatically
to “trickle charging“. This means that the batteries
are no longer charged with a continuous current but
rather with short pulses of current. This counteracts
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