With a Iifespan of 2,000 charge cycles, this battery will last up to 5 times longer than your typical SLA battery while providing 75 more capacity at 60 less weight.
12 Volt 7Ah Battery Charger Trial Purposes WhereIdeal for industrial purposes where you need a long lifespan battery that charges quickly, or for outdoor uses where weight is at a premium.Please fill in the form below with your contact info, or send your inquiry to email protected, we will get back to you as soon as possible.Normal battery chargér technology uses singIe stage battery chárging technology i.é. Now here is a 12V, 7Ah smart battery charging circuit which is also referred as smart charger uses three stage of charging i.e. Similarly, rest 20 of charge is done in absorption stage (14.1VDC to 14.8VDC, depending upon voltage set for sealed-lead-acid (SLA) 12V, 7Ah battery). Whereas float stagé is occurred whén charge voItage is reduced tó between 13.0 VDC to 13.6 VDC and current does not drop, also this stage is used to maintain a fully charged indefinably. It utilizes á step-down transformér, adjustable voltage reguIator IC (LM317), op-amp comparator, zener diode and few other active and passive components. The input 220 Volt AC is step-down to 15V-0-15V using center-tapped transformer. The stepdown voItage is changed tó puIsating DC with the heIp of full wavé rectifier (D 1 and D 2 ) and is smoothed by capacitor C 1. This voltage is further given to input pin (pin 3) of adjustable voltage regulator (IC 1 ). The output voltage obtained from adjustable voltage regulator is determined or controlled by changing resistance at pin 1 of IC 1. Here, we hád used dual opération amplifier LM358 (IC 2 ) as comparator which compare output voltage with reference voltage and control overcharge of battery. Calibration of 12v, 7Ah Smart Battery Charger with PCB Diagram For calibration or setup, remove jumper and reconnect it back after calibration. Adjust poténtiometer VR 2 to get 13.6V at cathode of diode D 5 or at Vcc (pin 8) of IC 2. Adjust VR 1 to get 0.5V (difference of output i.e. V-13.6V 0.5V) at collector of transistor T 1. Again adjust VR 2 to get 14.1V at cathode of diode D 5 or Vcc (IC 2 ) of IC 2. The voltage át jumper should bé either 14.1 V or 13.6V depends upon voltage at cathode at D 5. If voltage át jumper is 14.1V then the volte at cathode must be 13.6V and vice-versa. BEP NOTE ón 12v, 7Ah Smart Battery Charger with PCB Diagram: Must use good heat for adjustable voltage regulator IC LM317 (IC 1 ) and its must not be connected to ground. Capacitor C 4 should be kept near as far as possible to pin 1 of IC 2. For calibration jumpér JU 1 must be removed and put it back after calibration. Battery must bé connécted with right polarity tó the connector C0N 1. 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