Found a 12v battery charger ( laptop PSU style ) while I was having a rummage t'other day, just a generic Chinese jobby - but I can't seem to find any specific info as to whether it's a plain 'always full on' job or whether it has provision to roll back to a trickle.
It has some sensing built it - an led that switches colour from red to green when the battery is charged, which suggests to me that might knock its output down. I managed to find a spec sheet for it and wondered if anyone here would be able to enlighten me...
Item Specification Model HP1202A ( 12V - 3.5A ) Output current DC 3.5A?5% No load Max Output Voltage DC 13.7V?1% Trickle Current DC 0.1A?5% Input Voltage AC 85 - 264V Efficiency AC-DC MIN 85% Performance Switching Mode Charging Method Fixed Voltage, fixed Current Output Detection 1.Short Circuit Detection
2.Output Voltage/Current Limit
3.Reverse Power Protected
The charging method specs suggest it's always 'full on'...but the trickle current hints that it might roll itself back....comments?
Regards,