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SLAP! Voltage over time
Two SLAPs, each supplying power to a KingRex T20 bi-amping two pairs of Loth-X BS-1, were tested and measured side by side.


Time/Condition SLAP (L) SLAP (R) Other observations
Fully charged 14.04 v 14.01v. Once the charger button was switched off, VDC dropped at 0.0 v every 2 to 3 seconds even T20 was not turned on.

After playing 1st CD (69:15) 12.97 v 12.97 v
After playing 2nd CD (66:30) 12.91 v 12.90 v
After playing 3rd CD (61:15) 12.91 v 12.89 v
After playing 4th CD (62:55) 12.90 v 12.89 v
After idling for 2 hours (19:34-21:34) 12.91 v 12.91 v - idling means PSU on, amp off, charger off.

After playing 5th CD (66:15) 12.88 v 12.88 v
After idling for 12 hours 12.75 v 12.75 v
After idling for 1 hour 12.74 v 12.74 v
After playing 6th CD (64:09) 12.69 v 12.69 v
After playing 7th CD (77:53) 12.67 v 12.67 v
After playing 8th CD (57:47) 12.65 v 12.65 v

After idling for 6 ½ hours 12.57 v 12.58 v

After playing 9th CD (60:35) 12.54 v 12.54 v

After idling for 12 ½ hours 12.38 v 12.39 v

After playing 10th CD (56:06) 12.35 v 12.35 v
After playing 11th CD (64:42) 12.32 v 12.32 v
After playing 12th CD (70:12) 12.28 v 12.28 v

After idling for 36 hours, 11.44 v 11.47 v Green LED is still on, indicating enough power to drive amp.
After idling for 16 hours (0.00 v) 10.87 v L: LED flashing Green/Red, safety circuit activated.

R: Green LED was on and voltage reading was possible. When PSU was turned On and then Off again, LED started flashing Green/Red, safety circuit activated.

Start recharging (Sunday 16:15) - Charger button switched On, PSU button switched On. LED Red.
Charging (Sunday 23:30) LED Red.
Charging (Monday 10:00) LED Red.

Charging (Monday 11:40) 13.70 v 13.76 v L: LED Red. R: LED Green.
Charging (Monday 13:54) 13.76 v 13.80 v L: LED Green. R: LED Green.
Charging (Monday 18:00) 13.84 v 13.85 v LED Green
Charging (Monday 22:00) 13.86 v 13.88 v LED Green

Charging (Tuesday 10:00) 13.88 v 13.90 v LED Green


Further findings: Accidentally turned off charger on April 20 8 pm and noticed RED/GREEN LEDs flashing on May 1 10am. Started charging on May1 10am and GREEN LEDs were back on May 2 at 9am. That means SLAP will discharge to low level within 10 days and fully recover in 22 to 23 hours.