diff options
| -rw-r--r-- | firmware/powermgmt.c | 9 | ||||
| -rw-r--r-- | firmware/powermgmt.h | 3 |
2 files changed, 7 insertions, 5 deletions
diff --git a/firmware/powermgmt.c b/firmware/powermgmt.c index bcf0659..62bc5d3 100644 --- a/firmware/powermgmt.c +++ b/firmware/powermgmt.c @@ -466,10 +466,11 @@ static void power_thread(void) snprintf(power_message, POWER_MESSAGE_LEN, "chg pause %d min", charge_pause); } else { /* calculate max charge time depending on current battery level */ - /* take 20% more because battery level is not linear */ - charge_max_time_now = CHARGE_MAX_TIME * (100 + 30 - battery_level()) / 100; - if (charge_max_time_now > CHARGE_MAX_TIME) { - charge_max_time_now = CHARGE_MAX_TIME; + /* take 35% more because battery level is not linear */ + i = CHARGE_MAX_TIME_1500 * BATTERY_CAPACITY / 1500; + charge_max_time_now = i * (100 + 35 - battery_level()) / 100; + if (charge_max_time_now > i) { + charge_max_time_now = i; } snprintf(power_message, POWER_MESSAGE_LEN, "ChgAt %d%% max %dm", battery_level(), charge_max_time_now); diff --git a/firmware/powermgmt.h b/firmware/powermgmt.h index f2f3a0e..5e828e2 100644 --- a/firmware/powermgmt.h +++ b/firmware/powermgmt.h @@ -39,7 +39,8 @@ #ifdef HAVE_CHARGE_CTRL #define POWER_MESSAGE_LEN 32 /* power thread status message */ -#define CHARGE_MAX_TIME 8*60 /* minutes: maximum charging time */ +#define CHARGE_MAX_TIME_1500 450 /* minutes: maximum charging time for 1500 mAh batteries */ + /* actual max time depends also on BATTERY_CAPACITY! */ #define CHARGE_MIN_TIME 10 /* minutes: minimum charging time */ #define CHARGE_RESTART_HI 85 /* %: when to restart charging in 'charge' mode */ /* attention: if set too high, normal charging is started in trickle mode */ |