0000226: Upgrade UPS APC 350 to battery charger

ID	Project	Category	View Status	Date Submitted	Last Update

0000226	Microcontrollers, shields, automation, arduino	[All Projects] General	public	2017-04-30 16:14	2020-09-24 17:43

Reporter	DigitalMy
Priority	normal	Severity	minor	Reproducibility	have not tried
Status	assigned	Resolution	open

Summary	0000226: Upgrade UPS APC 350 to battery charger
Description	Transformer in APC CS 350 (step-up one, works in inverter mode) seems to have 3 coils: coil 1: xfmr double pin connecor goes to relay 68-12-2CE 12V 175 Ohm (BLK+WHT) - this is high voltage 230V AC output; coil 2: BLU wire goes to PHP 54N06T MOSFET (Q28) Drain, which Source goes to battery (-) , and low-voltage part BRN wire goes to PHP 54N06T MOSFET (Q14) Drain, which Source goes to battery (-) coil 3: BLK goes to battery (+) fuse RED goes to F1010E IR Power MOSFET drain and heatsink, which Source goes to battery (-) WHT goes to F1010E IR Power MOSFET drain and heatsink, which Source goes to battery (-) equal to GND
Tags	No tags attached.

DigitalMy 2017-05-18 10:51 administrator ~0000526 Last edited: 2020-09-24 17:43 View 3 revisions	Tested 5A XL4015 DC-DC adjustable charger module Used 9Ah lead-acid battery With 24V DC input have overheat of XL4015E1 on board , in cace output current above 1A Car battery 63Ah capacity charge from 0V (0Ah rest) will take 1.0 A = 63 h 0.5 A = 126 h (about a week)

DigitalMy 2020-09-24 00:34 administrator ~0003979	Tested battery recovery method with reverse polarity applied Opposite charge happened up to 11V Used CC limit 0.5A preventing overheat Used 14.4V output (measured after extra diode) XL4015_E1_5A_CC.jpg (128,486 bytes) XL4015_E1_5A_CC.jpg (128,486 bytes)