# Power **URL:** https://community.sparkfun.com/c/components-and-accessories/power-management/65.md?page=1 [Latest](https://community.sparkfun.com/latest.md) · [Categories](https://community.sparkfun.com/categories.md) · [Tags](https://community.sparkfun.com/tags.md) **Page:** 2 --- ## [Baby buck 3v3 w/18v supply and pro mini 3v3](https://community.sparkfun.com/t/baby-buck-3v3-w-18v-supply-and-pro-mini-3v3/63909)
**Author:** [@Mgarof94](https://community.sparkfun.com/u/Mgarof94)\ **Replies:** 1\ **Last updated:** [March 11, 2025, 2:39pm UTC](https://community.sparkfun.com/t/baby-buck-3v3-w-18v-supply-and-pro-mini-3v3/63909 "2025-03-11T14:39:25Z")
Hello all. I have an 18V battery running into a baby buck 3v3 and then running regulated 3v3 power straight into raw pin on a pro mini, all sharing common ground. Im using a switch and voltage divider to enable the baby… --- ## [Does the MAX17043 already internally compensate for temperature in any way?](https://community.sparkfun.com/t/does-the-max17043-already-internally-compensate-for-temperature-in-any-way/63786)
**Author:** [@ino](https://community.sparkfun.com/u/ino)\ **Replies:** 1\ **Last updated:** [March 5, 2025, 8:55pm UTC](https://community.sparkfun.com/t/does-the-max17043-already-internally-compensate-for-temperature-in-any-way/63786 "2025-03-05T20:55:20Z")
Hello everyone, I’m working with the MAX17043 on a JN5168 to measure the state of charge (SOC) of a Li-Ion battery. I know that the CONFIG (0x0C) register contains the RCOMP field, which adjusts the ModelGauge™ algorith… --- ## [Schematic link for this LiPo charger is 404](https://community.sparkfun.com/t/schematic-link-for-this-lipo-charger-is-404/63773)
**Author:** [@rmann](https://community.sparkfun.com/u/rmann)\ **Replies:** 2\ **Last updated:** [March 5, 2025, 12:35am UTC](https://community.sparkfun.com/t/schematic-link-for-this-lipo-charger-is-404/63773 "2025-03-05T00:35:21Z")
Does anyone know where I can find the schematic and board layout image for this? SparkFun LiPo Charger Basic - Mini-USB --- ## [Question aluminum electrolytic capacitors store in my conditions](https://community.sparkfun.com/t/question-aluminum-electrolytic-capacitors-store-in-my-conditions/62527)
**Author:** [@classic\_samus\_aran](https://community.sparkfun.com/u/classic_samus_aran)\ **Replies:** 2\ **Last updated:** [December 30, 2024, 10:04pm UTC](https://community.sparkfun.com/t/question-aluminum-electrolytic-capacitors-store-in-my-conditions/62527 "2024-12-30T22:04:48Z")
What recommendation How to prevent deformation of the dielectric layers in aluminum electrolytic capacitors from stored electronic devices that were manufactured in the early 90s and early 2000s and store my home at a te… --- ## [Monster Moto Shield High Current Draw](https://community.sparkfun.com/t/monster-moto-shield-high-current-draw/62282)
**Author:** [@andreviljoenn](https://community.sparkfun.com/u/andreviljoenn)\ **Replies:** 4\ **Last updated:** [December 13, 2024, 9:54pm UTC](https://community.sparkfun.com/t/monster-moto-shield-high-current-draw/62282 "2024-12-13T21:54:56Z")
Hi, I just purchased a Monster Moto Shield unit (knowing they’re retired, which is ok). The first time I connected my power supply to the input pins + and - at the bottom, the input current immediately climbed beyond 15 … --- ## [Questions aluminum electrolytic capacitors store](https://community.sparkfun.com/t/questions-aluminum-electrolytic-capacitors-store/62083)
**Author:** [@classic\_samus\_aran](https://community.sparkfun.com/u/classic_samus_aran)\ **Replies:** 9\ **Last updated:** [December 3, 2024, 4:48pm UTC](https://community.sparkfun.com/t/questions-aluminum-electrolytic-capacitors-store/62083 "2024-12-03T16:48:07Z")
I read that aluminum electrolytic capacitors stored without being energized for a long time present many types of fails Does the energization time of the aluminum electrolytic capacitor influence the time it can be stor… --- ## [Question about LiPo Charger/Booster Output Without Battery](https://community.sparkfun.com/t/question-about-lipo-charger-booster-output-without-battery/61848)
**Author:** [@Jah-On](https://community.sparkfun.com/u/Jah-On)\ **Replies:** 5\ **Last updated:** [November 15, 2024, 2:14am UTC](https://community.sparkfun.com/t/question-about-lipo-charger-booster-output-without-battery/61848 "2024-11-15T02:14:27Z")
Hello, We recently purchased a few of these for a project and they do not seem to be working as intended for our usage. We’re using them to power some LoRa boards which appear to spike above 20mA which seems to prevent … --- ## [Charging LiPo with SparkFun RedBoard Artemis Nano](https://community.sparkfun.com/t/charging-lipo-with-sparkfun-redboard-artemis-nano/60009)
**Author:** [@Sirinivi](https://community.sparkfun.com/u/Sirinivi)\ **Replies:** 3\ **Last updated:** [August 31, 2024, 12:53am UTC](https://community.sparkfun.com/t/charging-lipo-with-sparkfun-redboard-artemis-nano/60009 "2024-08-31T00:53:53Z")
I wasn’t able to find how to charge my LiPo with a sparkfun redboard artemis nano. Can you please assist me? --- ## [Sparkfun Zed F9R Phat No power over usb-c](https://community.sparkfun.com/t/sparkfun-zed-f9r-phat-no-power-over-usb-c/61471)
**Author:** [@Clifford](https://community.sparkfun.com/u/Clifford)\ **Replies:** 2\ **Last updated:** [October 28, 2024, 11:41pm UTC](https://community.sparkfun.com/t/sparkfun-zed-f9r-phat-no-power-over-usb-c/61471 "2024-10-28T23:41:54Z")
Connected to power via usb-c no leds. Tried another computer and cable. The port does charge my phone. This was left in a sealed bag in a lab for several years, so I think the battery might be dead but this is just a com… --- ## [Sparkfun LiPo Charger Plus (USB-C) not charging](https://community.sparkfun.com/t/sparkfun-lipo-charger-plus-usb-c-not-charging/61429)
**Author:** [@Juppstein](https://community.sparkfun.com/u/Juppstein)\ **Replies:** 1\ **Last updated:** [October 25, 2024, 7:59pm UTC](https://community.sparkfun.com/t/sparkfun-lipo-charger-plus-usb-c-not-charging/61429 "2024-10-25T19:59:27Z")
Just got myself said charger and I am a bit at a loss here. Whatever LiPo I try the charge LED will only go on for a split second and then stays off while the power LED (red) stays on as it should . I’v tried different p… --- ## [Charging the LiPo batteries that are rated for 40 mAH](https://community.sparkfun.com/t/charging-the-lipo-batteries-that-are-rated-for-40-mah/61136)
**Author:** [@doctorwho8](https://community.sparkfun.com/u/doctorwho8)\ **Replies:** 2\ **Last updated:** [October 11, 2024, 1:10am UTC](https://community.sparkfun.com/t/charging-the-lipo-batteries-that-are-rated-for-40-mah/61136 "2024-10-11T01:10:08Z")
Hello! Would someone confirm or refute this one? To charge a battery that small, the user should use the adjustable charger and then set it to use an external bias resistor. However it was the size of the resistor that … --- ## [Sparkfun Inventor's Kit - how to use the external 4AA battery holder](https://community.sparkfun.com/t/sparkfun-inventors-kit-how-to-use-the-external-4aa-battery-holder/60644)
**Author:** [@Gina](https://community.sparkfun.com/u/Gina)\ **Replies:** 1\ **Last updated:** [September 16, 2024, 10:52pm UTC](https://community.sparkfun.com/t/sparkfun-inventors-kit-how-to-use-the-external-4aa-battery-holder/60644 "2024-09-16T22:52:10Z")
I have a SIK kit with a 4AA battery holder with a male jack. This will produce approximately 6 V, but the female jack for external power on the redboard says 7-15V are required. How am I supposed to use this battery pa… --- ## [USB power meter (TOL-15571)](https://community.sparkfun.com/t/usb-power-meter-tol-15571/60001)
**Author:** [@ntoulu](https://community.sparkfun.com/u/ntoulu)\ **Replies:** 2\ **Last updated:** [August 19, 2024, 6:14pm UTC](https://community.sparkfun.com/t/usb-power-meter-tol-15571/60001 "2024-08-19T18:14:47Z")
Hi, Does anyone know if the TOL-15571 supports any kind of data reading, or is the recorded data only available on the screen? I have tried to see, if the device is recognized as a serial device by Matlab, but no luck. … --- ## [Battery babysitter charging multiple cells?](https://community.sparkfun.com/t/battery-babysitter-charging-multiple-cells/59775)
**Author:** [@ardin](https://community.sparkfun.com/u/ardin)\ **Replies:** 2\ **Last updated:** [August 9, 2024, 1:51pm UTC](https://community.sparkfun.com/t/battery-babysitter-charging-multiple-cells/59775 "2024-08-09T13:51:18Z")
Hello, I have been using a Battery Babysitter to charge a 6aH (PRT-13856) and 10aH (from Adafruit) battery pack. Both these battery packs are made of 3 cells and come with the standard JST connector that is on the Batte… --- ## [ThingPlus C WRL-15663](https://community.sparkfun.com/t/thingplus-c-wrl-15663/59738)
**Author:** [@tommy.r](https://community.sparkfun.com/u/tommy.r)\ **Replies:** 0\ **Last updated:** [August 2, 2024, 3:39pm UTC](https://community.sparkfun.com/t/thingplus-c-wrl-15663/59738 "2024-08-02T15:39:58Z")
Hey all. We plan to power this board at VUSB with a regulated 5V, stepped down from 9-12. No battery. Is it safe to USB debug this thing while powered from the regulated 5V, which is needed for other components. It sa… --- ## [Powering Redboard with LiPo](https://community.sparkfun.com/t/powering-redboard-with-lipo/59584)
**Author:** [@Sirinivi](https://community.sparkfun.com/u/Sirinivi)\ **Replies:** 2\ **Last updated:** [July 25, 2024, 10:34pm UTC](https://community.sparkfun.com/t/powering-redboard-with-lipo/59584 "2024-07-25T22:34:44Z")
I have a project where I’m using a Redboard Artemis Nano, and I’d like to run it off battery power. I had a situation where I tried to use a 3.7V 1100mAh LiPo (Not one made by SparkFun, I have a picture attached below, … --- ## [Panel Mount USB-C Extension Cable - 6](https://community.sparkfun.com/t/panel-mount-usb-c-extension-cable-6/59564)
**Author:** [@ptlab](https://community.sparkfun.com/u/ptlab)\ **Replies:** 2\ **Last updated:** [July 25, 2024, 12:20pm UTC](https://community.sparkfun.com/t/panel-mount-usb-c-extension-cable-6/59564 "2024-07-25T12:20:03Z")
I miss information about max current for extension cable “CAB-15455”. Is possible to get this information? I would like to use it for powering Raspbery Pi4. --- ## [Lithium Ion Controller for 2S 2P?](https://community.sparkfun.com/t/lithium-ion-controller-for-2s-2p/47162)
**Author:** [@jamieay1](https://community.sparkfun.com/u/jamieay1)\ **Replies:** 10\ **Last updated:** [July 24, 2024, 3:19pm UTC](https://community.sparkfun.com/t/lithium-ion-controller-for-2s-2p/47162 "2024-07-24T15:19:04Z")
Hello! Does Sparkfun have a charge controller for a 2P 2S battery pack? Jamie --- ## [DataLogger IoT - 9DoF - plus LoRa transmission](https://community.sparkfun.com/t/datalogger-iot-9dof-plus-lora-transmission/47668)
**Author:** [@ksilva](https://community.sparkfun.com/u/ksilva)\ **Replies:** 1\ **Last updated:** [July 10, 2024, 8:52pm UTC](https://community.sparkfun.com/t/datalogger-iot-9dof-plus-lora-transmission/47668 "2024-07-10T20:52:01Z")
Hello, I am trying to transmit the data available on the serial port of the DataLogger IoT - 9DoF via LoRa using the expLoRaBLE board. However, it is not possible to change the datalogger’s firmware to transfer the dat… --- ## [DC to USB-C PD Trigger](https://community.sparkfun.com/t/dc-to-usb-c-pd-trigger/47617)
**Author:** [@tk11](https://community.sparkfun.com/u/tk11)\ **Replies:** 3\ **Last updated:** [July 2, 2024, 8:42pm UTC](https://community.sparkfun.com/t/dc-to-usb-c-pd-trigger/47617 "2024-07-02T20:42:43Z")
I don’t know if anyone can help but I am trying to see if this is possible or if there is a module for it. I know there are USBC PD Trigger boards but that seems to add USBC functionality to a circuit that will negotiate… --- ## [LiPo Fuel Gauge (MAX1704X) with Python](https://community.sparkfun.com/t/lipo-fuel-gauge-max1704x-with-python/47625)
**Author:** [@archaic0](https://community.sparkfun.com/u/archaic0)\ **Replies:** 2\ **Last updated:** [June 26, 2024, 3:46am UTC](https://community.sparkfun.com/t/lipo-fuel-gauge-max1704x-with-python/47625 "2024-06-26T03:46:54Z")
I purchased a few of these LiPo fuel gauges and got one hooked up physically using I2C. I’m using a raspberry pi zero however, and am having trouble translating between the examples given for arduino and in circuit pytho… --- ## [SPX-17870 - Soft Power Switch missing 3.3V zener (D2)](https://community.sparkfun.com/t/spx-17870-soft-power-switch-missing-3-3v-zener-d2/47619)
**Author:** [@inductor\_guy](https://community.sparkfun.com/u/inductor_guy)\ **Replies:** 3\ **Last updated:** [June 24, 2024, 2:44pm UTC](https://community.sparkfun.com/t/spx-17870-soft-power-switch-missing-3-3v-zener-d2/47619 "2024-06-24T14:44:02Z")
A couple of years ago I ordered a Soft Power Switch for a hobby project. Unfortunately that project got delayed and I only got to looking at the SPS I ordered recently. I noticed that one of the components was missing (m… --- ## [MOSFET Power Controller Wiring](https://community.sparkfun.com/t/mosfet-power-controller-wiring/47541)
**Author:** [@ponch0v](https://community.sparkfun.com/u/ponch0v)\ **Replies:** 9\ **Last updated:** [June 11, 2024, 11:19pm UTC](https://community.sparkfun.com/t/mosfet-power-controller-wiring/47541 "2024-06-11T23:19:36Z")
Just want to get confirmation on wiring for these. The Output are the pins not labeled “IN”, and those go to the device needing power? Does this only need one wire off the microcontroller into the IN pin or does it nee… --- ## [SparkFun Power Delivery Board - USB-C (Qwiic) Ground Issues](https://community.sparkfun.com/t/sparkfun-power-delivery-board-usb-c-qwiic-ground-issues/47447)
**Author:** [@kinesphere](https://community.sparkfun.com/u/kinesphere)\ **Replies:** 6\ **Last updated:** [May 24, 2024, 10:44am UTC](https://community.sparkfun.com/t/sparkfun-power-delivery-board-usb-c-qwiic-ground-issues/47447 "2024-05-24T10:44:28Z")
Hi, I have a SparkFun Power Delivery Board - USB-C (Qwiic) which uses the STUSB4500 chip. Why does the circuit stop working when I connect a probe to ground? Or just touch a wire to ground? Is it because this board only… --- ## [SparkFun Triad Spectrophotometer 5V ?? 3.3V??](https://community.sparkfun.com/t/sparkfun-triad-spectrophotometer-5v-3-3v/47452)
**Author:** [@chriseji](https://community.sparkfun.com/u/chriseji)\ **Replies:** 1\ **Last updated:** [May 21, 2024, 3:29pm UTC](https://community.sparkfun.com/t/sparkfun-triad-spectrophotometer-5v-3-3v/47452 "2024-05-21T15:29:23Z")
So, i have an AS7265X Spectrometer and as I hooked it with my Arduino MEGA, i noticed that the power LED that is in the board is dim. It seems like the sensor isn’t getting enough power? while i tried to plugged it to th… --- ## [Is it OK to operate the COM-15208 at a custom output voltage of 1.5V?](https://community.sparkfun.com/t/is-it-ok-to-operate-the-com-15208-at-a-custom-output-voltage-of-1-5v/47423)
**Author:** [@m3rd](https://community.sparkfun.com/u/m3rd)\ **Replies:** 2\ **Last updated:** [May 15, 2024, 2:39pm UTC](https://community.sparkfun.com/t/is-it-ok-to-operate-the-com-15208-at-a-custom-output-voltage-of-1-5v/47423 "2024-05-15T14:39:38Z")
Input voltage is 12V. Is it OK to operate the COM-15208 at a custom output voltage of 1.5V? The data sheet lists minimum output voltage of 2.5V. I added a custom resistor (59 kOhm) and it worked. Thanks, --- ## [M6E Nano Board Powers Off while running Code or URA](https://community.sparkfun.com/t/m6e-nano-board-powers-off-while-running-code-or-ura/47373)
**Author:** [@vps39](https://community.sparkfun.com/u/vps39)\ **Replies:** 5\ **Last updated:** [May 7, 2024, 4:31pm UTC](https://community.sparkfun.com/t/m6e-nano-board-powers-off-while-running-code-or-ura/47373 "2024-05-07T16:31:01Z")
I am running the Universal Reader Assistant so I can read tags on my sparkfun UHD RFID board. The issue is while It is running the board powers off mid process and powers back on, causing it to lose connection and reset … --- ## [Produce 0-5V signal from NVIDIA Jetson Nano](https://community.sparkfun.com/t/produce-0-5v-signal-from-nvidia-jetson-nano/47374)
**Author:** [@dander80](https://community.sparkfun.com/u/dander80)\ **Replies:** 1\ **Last updated:** [May 3, 2024, 9:51pm UTC](https://community.sparkfun.com/t/produce-0-5v-signal-from-nvidia-jetson-nano/47374 "2024-05-03T21:51:31Z")
Does anybody know how to easily generate a modulating 0-5V signal from a Jetson Nano (which uses 3.3V)? Would it be possible to use the Adafruit MCP4728 Quad DAC to produce a 0-3.3V signals, then use an amplifier to bum… --- ## [Qwiic Quad Relay boards consistently bad?](https://community.sparkfun.com/t/qwiic-quad-relay-boards-consistently-bad/47324)
**Author:** [@HansenAero](https://community.sparkfun.com/u/HansenAero)\ **Replies:** 3\ **Last updated:** [April 30, 2024, 9:46pm UTC](https://community.sparkfun.com/t/qwiic-quad-relay-boards-consistently-bad/47324 "2024-04-30T21:46:25Z")
These are great boards, when they work. However, EVERY single review for the Qwiic Quad Relay boards reports the relay boards have failed after a short time. Two out of our two relay boards have failed despite using the… --- ## [Control DC Automobile DC Blower (non-pwm) Fan with Microsontroller](https://community.sparkfun.com/t/control-dc-automobile-dc-blower-non-pwm-fan-with-microsontroller/47325)
**Author:** [@gordsh](https://community.sparkfun.com/u/gordsh)\ **Replies:** 2\ **Last updated:** [April 23, 2024, 1:27am UTC](https://community.sparkfun.com/t/control-dc-automobile-dc-blower-non-pwm-fan-with-microsontroller/47325 "2024-04-23T01:27:39Z")
Hello, I am looking for some guidance on what approach you would suggest for controlling a DC 12-volt blower fan from a car with an Arduino-based microcontroller. The12 v dc blower I am using is very similar to this one … [Previous page](https://community.sparkfun.com/c/components-and-accessories/power-management/65.md) [Next page](https://community.sparkfun.com/c/components-and-accessories/power-management/65.md?page=2)