Hitachi uc 24yj Technical Data And Service Manual page 18

5-3-7. Revitalizing the battery (trickle charging)
This is a function to charge a battery further after completion of charging as shown in Fig. 14 (repeats the
following cycle 10 times: 1-hour pause and 15-minute charging at 1.3 A). A new battery or a battery that has not
been used for extensive periods (6 months as a guide) may not be charged completely due to inert internal
chemicals. Leave the battery inserted in the charger for 8 to 12 hours after completion of charging. The charger
automatically "revitalizes" the battery by trickle recharging.
Completion
of charging
Charging
Status
(No.)
Ambient temperature
Fig. 13 Time required to switch from 9 A to 6 A (5 A)
Revitalizing the battery (trickle charging)
{10 times (about 12 hours)}
Charge status lamp lights green continuously.
1-hour 15-minute
pause charging
1.3 A
Charging time
Fig. 14 Revitalizing the battery (trickle charging)
6 A (5 A) range
9 A range
1-hour 15-minute
pause charging
1.3 A
--- 16 ---
Switching boundary
Completion
of revitalizing
1.3 A