Hi, For a solar-powered, deep sleep application on my Boron LTE device, I am pushing Li battery state up to the cloud read from FuelGauge::getVCell() and FuelGauge::getSoC(). I noticed that in the connection handshake, one of the items pushed is a battery status (that gets reported in the console). I am seeing differences in that reporting where the Particle status will show 95%, but getSoC() returns 81% – theoretically read seconds apart. Any idea where this discrepancy lies? Thanks, Eric

The 81% reading is the “raw” value where aprox. 86-89% is the maximum that can be reached even with a “fully” charged LiPo (due to the way how the SoC is calculated by the fuel gauge) and the cloud then applies some “normalisation” to map the raw 0…90% onto a 0…100% scale.

Here's a previous post that coincides with @ScruffR's explanation above : [image] State of Charge Values Troubleshooting I believe the Device Vitals assume that the default Li-Po termination voltage of 4.112 V is used. The Fuel Gauge reports the actual SOC depending on the voltage when sampled. Here’s an example for a Boron being recharged by a small Solar Panel this morning. The Boron’s PMIC setting setChargeVoltage(4208) is used, instead of the 4.112 V (default). Note: be sure to monitor the enclosure temperature when charging to 4.208 V. Fuel Gauge reports 92% SOC @ 4.14V. This is the actual condition, re…

Battery level mismatch?

Troubleshooting

Rftop August 7, 2019, 4:54pm 3

Here's a previous post that coincides with @ScruffR's explanation above :

Topic		Replies	Views
State of Charge Values Troubleshooting	6	1301	April 2, 2019
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fuel.getSoC() return 22% of car battery fully charged Hardware	4	395	March 15, 2022
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Battery level mismatch?

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