2 added 298 characters in body edited Oct 17 '16 at 17:14 Sunnyskyguy EE75 80.1k22 gold badges3030 silver badges116116 bronze badges Just beware that high Capacitance or low ESR loads may cause extra inrush currents. Be careful how it is used with nonlinear loads. Add a curent shunt R to monitor current if in doubt on ground side with 50mV=5A or 10 mOhm shunt and monitor I with a DMM.( or higher R to suit desired range) If you buy something with No Specs and No idea how it works, How can we tell you how it will perform? e.g. Fusing the input may be too slow if your output has a very low ESR load. For example, this "looks" like a good variable bench supply using Series LiPo cells that are pre-balanced, but we can only guess. THe good news is it's incredibly cheap. $6 so you can reverse engineer it, measure hot spots, and look up datasheet for obvious tips on current limits. e.g. (For step-up To prevent damage to the switch, its current must be externally limited to 6.0A.) Input voltage :3-34V Output voltage: continuously adjustable (4-35V) Output Current: 2.5A (MAX) ( IMHO... not at all voltages) Module size: 49 (mm) x26 (mm) Input mode: IN + input positive level, IN-input negative I would try to design a precision external current limiter using a 50mV shunt drop R and Small RdsON MOSFET switch with comparator. or do not try to run non-linear loads such as high current 2A motors or 3000 Farad supercaps or heavy pulsed loads without active current limit protection. Usually the part will get hot and give some warning of this before damage unless very high surge into a low ESR load.. I think it is better to use in step-down mode with Vbat greater than output. You can evaluate the IC performance doing load drop regulation and source voltage regulation tests and efficiency vs Vin-out drop. Hint buy 1 spare. If you buy something with No Specs and No idea how it works, How can we tell you how it will perform? e.g. Fusing the input may be too slow if your output has a very low ESR load. For example, this "looks" like a good variable bench supply using Series LiPo cells that are pre-balanced, but we can only guess. THe good news is it's incredibly cheap.$6 so you can reverse engineer it, measure hot spots, and look up datasheet for obvious tips on current limits. e.g. (For step-up To prevent damage to the switch, its current must be externally limited to 6.0A.) Input voltage :3-34V Output voltage: continuously adjustable (4-35V) Output Current: 2.5A (MAX) ( IMHO... not at all voltages) Module size: 49 (mm) x26 (mm) Input mode: IN + input positive level, IN-input negative I would try to design a precision external current limiter using a 50mV shunt drop R and Small RdsON MOSFET switch with comparator. or do not try to run non-linear loads such as high current 2A motors or 3000 Farad supercaps or heavy pulsed loads without active current limit protection. Usually the part will get hot and give some warning of this before damage unless very high surge into a low ESR load.. I think it is better to use in step-down mode with Vbat greater than output. You can evaluate the IC performance doing load drop regulation and source voltage regulation tests and efficiency vs Vin-out drop. Hint buy 1 spare. Just beware that high Capacitance or low ESR loads may cause extra inrush currents. Be careful how it is used with nonlinear loads. Add a curent shunt R to monitor current if in doubt on ground side with 50mV=5A or 10 mOhm shunt and monitor I with a DMM.( or higher R to suit desired range) If you buy something with No Specs and No idea how it works, How can we tell you how it will perform? e.g. Fusing the input may be too slow if your output has a very low ESR load. For example, this "looks" like a good variable bench supply using Series LiPo cells that are pre-balanced, but we can only guess. THe good news is it's incredibly cheap. $6 so you can reverse engineer it, measure hot spots, and look up datasheet for obvious tips on current limits. e.g. (For step-up To prevent damage to the switch, its current must be externally limited to 6.0A.) Input voltage :3-34V Output voltage: continuously adjustable (4-35V) Output Current: 2.5A (MAX) ( IMHO... not at all voltages) Module size: 49 (mm) x26 (mm) Input mode: IN + input positive level, IN-input negative I would try to design a precision external current limiter using a 50mV shunt drop R and Small RdsON MOSFET switch with comparator. or do not try to run non-linear loads such as high current 2A motors or 3000 Farad supercaps or heavy pulsed loads without active current limit protection. Usually the part will get hot and give some warning of this before damage unless very high surge into a low ESR load.. I think it is better to use in step-down mode with Vbat greater than output. You can evaluate the IC performance doing load drop regulation and source voltage regulation tests and efficiency vs Vin-out drop. Hint buy 1 spare. 1 answered Oct 17 '16 at 16:54 Sunnyskyguy EE75 80.1k22 gold badges3030 silver badges116116 bronze badges If you buy something with No Specs and No idea how it works, How can we tell you how it will perform? e.g. Fusing the input may be too slow if your output has a very low ESR load. For example, this "looks" like a good variable bench supply using Series LiPo cells that are pre-balanced, but we can only guess. THe good news is it's incredibly cheap.$6 so you can reverse engineer it, measure hot spots, and look up datasheet for obvious tips on current limits. e.g. (For step-up To prevent damage to the switch, its current must be externally limited to 6.0A.) Input voltage :3-34V Output voltage: continuously adjustable (4-35V) Output Current: 2.5A (MAX) ( IMHO... not at all voltages) Module size: 49 (mm) x26 (mm) Input mode: IN + input positive level, IN-input negative I would try to design a precision external current limiter using a 50mV shunt drop R and Small RdsON MOSFET switch with comparator. or do not try to run non-linear loads such as high current 2A motors or 3000 Farad supercaps or heavy pulsed loads without active current limit protection. Usually the part will get hot and give some warning of this before damage unless very high surge into a low ESR load.. I think it is better to use in step-down mode with Vbat greater than output. You can evaluate the IC performance doing load drop regulation and source voltage regulation tests and efficiency vs Vin-out drop. Hint buy 1 spare.