Hi, All,
I have come across several devices that can only run on 1.5v alkaline batteries, not the rechargeable batteries, for example, some blood pressure monitors, pulse oximeters, and other devices that run small motors that would require either > 2A current, or near 1.5v per battery. The rechargeable batteries are typically at <1.3v, too low for these devices.
What are the alternatives ? I was hoping that buck/boost converters might work, but they may not, because they typically can handle current at 2A level, still not enough to drive small motors with load. Or the battery itself may have a current limit. I tested a boost converter today using a USB battery bank and it turns out that the battery itself has a current limit at 2A, not enough to keep a sprayer motor running which requires 4x1.5v alkaline batteries.
Any ideas? Thanks in advance.
I have come across several devices that can only run on 1.5v alkaline batteries, not the rechargeable batteries, for example, some blood pressure monitors, pulse oximeters, and other devices that run small motors that would require either > 2A current, or near 1.5v per battery. The rechargeable batteries are typically at <1.3v, too low for these devices.
What are the alternatives ? I was hoping that buck/boost converters might work, but they may not, because they typically can handle current at 2A level, still not enough to drive small motors with load. Or the battery itself may have a current limit. I tested a boost converter today using a USB battery bank and it turns out that the battery itself has a current limit at 2A, not enough to keep a sprayer motor running which requires 4x1.5v alkaline batteries.
Any ideas? Thanks in advance.