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- Qwiic Fuel Gauge - MAX17048
Based on the MAX17048, the Qwiic Fuel Gauge is perfect for monitoring your single-cell LiPo. While the MAX17048 provides pack voltage, it really shines with its State of Charge (SOC). 3.83V is ok to know, but knowing your battery is at 73% capacity is considerably better.
This is not a 'take the LiPo voltage curve and hack it into little voltage pieces' type of IC. The MAX17048 has a sophisticated algorithm that constantly monitors the pack giving much more accurate readings than a simple ADC. We've also written a fully featured Arduino library making interfacing as easy as a lipo.getSOC() call away.
The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.
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Customer Reviews
5 out of 5
Based on 1 ratings:
Adding a charger to this would be awesome! I would be able to add a LiPo with monitoring to any project!
SOC is State of Charge, not statement.
I've been wanting to try out Maxim's ModelGauge technology & this makes it pretty easy to do!
Hi! Does anyone know if this fuel-gauge IC works on battery cells up to 15 Ah? Kind regards.
Does anyone know offhand if this works with the charging circuit on the ESP32 thing plus? I would like to monitor the charge on the ESP32 Thing Plus.
It appears that I would connect the battery on the battery-in side and the sys-out to the ESP32 thing plus. That means I would need to find a 2 wire JST cable to connect between the ESP32 Thing plus and the Qwiic Fuel Gauge - MAX 17048 with appropriate Qwiic cables for the data transmission.
I love the combination of features on this! Any suggestions on how to combine this with solar charging? EDIT: Looking at the schematic, I realize that this circuit is not measuring current, only battery voltage. Therefore, connecting any charging circuit to it would probably be as simple as connecting it to the battery in a normal manner.