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Here are the most relevant picks for Li-ion / LiPo (LiPoly) projects—mostly focused on single-cell (1S) 3.7V nominal / 4.2V full batteries, plus charging and monitoring.
Battery monitoring (fuel gauges / meters) for 1S LiPo/Li-ion
- Adafruit LC709203F LiPoly / LiIon Fuel Gauge and Battery Monitor - STEMMA JST PH QT / Qwiic (I2C, reports voltage + state-of-charge %) — $13.95
- Adafruit MAX17048 LiPoly / LiIon Fuel Gauge and Battery Monitor (I2C, accurate % remaining for 1S 3.7–4.2V) — $12.90
- Single Li-Ion and LiPoly Battery Power Meter (standalone little display meter for single-cell packs) — $5.90
Charging / power modules (LiPo/Li-ion)
- Adafruit Micro Lipo w/MicroUSB Jack - USB LiIon/LiPoly charger [v1] (USB charger for 1S 3.7V/4.2V) — $14.75
- USB LiIon/LiPoly charger [v1.2] (USB mini-B Li-ion/LiPo charger module) — $26.00
- USB / DC / Solar Lithium Ion/Polymer charger [v2] charges from USB / DC / solar (useful for off-grid builds) — $35.15
- Adafruit LiIon or LiPoly Charger BFF Add-On for QT Py compact charger add-on for QT Py + 1S LiPo/Li-ion — $10.55
- PowerBoost 500 Charger - Rechargeable 5V Lipo USB Boost @ 500mA+ boosts 1S LiPo/Li-ion to 5V + built-in charging — $32.40
- PowerBoost 1000 Charger - Rechargeable 5V Lipo USB Boost @ 1A [1000C] same idea, higher 5V output current — $40.10
Batteries / cells (examples in catalog)
- Lithium Ion Polymer Battery with Short Cable - 3.7V 420mAh 1S LiPo with JST-PH lead — $13.95
- 14500 Rechargeable Li-Ion Battery 800mAh 3.7V Nipple 14500 (AA-size) 3.7V Li-ion cell — $10.75
- 18650 3.7v li-ion rechargeable battery with charge protection 18650 with built-in protection PCB — $12.35
18650 accessories
- Smart Charger for 18650 4.2V Li-ion battery multi-slot Li-ion charger for cylindrical cells — $9.25
- 18650 Battery holder without DC connector simple single-cell holder with leads — $2.15
Handy LiPo connector tool
- Adafruit JST PH LiPo Battery Connector Remover helps safely unplug JST-PH LiPo/Li-ion packs without yanking wires — $4.80
Which type are you trying to buy?
Showing 41-47 of 47 products · 13 unavailable products hidden
micro: IoT - micro:bit IoT Expansion Board
The micro:IoT is a feature-packed IoT expansion board for the BBC micro:bit. It integrates Wi-Fi connectivity, an OLED display, motor drivers, servo outputs, and a range of I/O ports into a compact cloud-shaped PCB — everything needed to build IoT projects with minimal setup. Designed to work wi...
12.1kΩ ±1% 1/10W SMD Resistor
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This surface-mount resistor is a compact 12.1 kOhms component for PCB assemblies, prototypes and repairs where a precise fixed resistance is needed.It is a thick film SMD resistor with ±1% tolerance and a 1/10W power rating, suited to dense circuit layouts and general low-power electronics work.T...
9V battery clip with 5.5mm/2.1mm plug
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A high-quality 9V battery clip with a pre-assembled 5.5mm/2.1mm centre-positive barrel connector. The moulded plastic clip covers the battery terminals to prevent short circuits, and the barrel plug connects directly to Arduino boards and other devices with a standard DC barrel jack. Key Feature...
![Huzzah! Adafruit.io Internet of Things Feather ESP8266 [WiFi Starter Kit]](/rails/active_storage/representations/redirect/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVGkChI1JIghwdXIGOwBUSSIMYmxvYl9pZAY7AEY=--68c330c627dcbfd0a5a0fdf2d0093338a2a71f11/BAh7BkkiC19yYWlscwY6BkVUewdJIglkYXRhBjsAVHsHOgtmb3JtYXRJIghqcGcGOwBUOhJyZXNpemVfdG9fZml0WwdpApABaQKQAUkiCHB1cgY7AFRJIg52YXJpYXRpb24GOwBG--4cc5678865497cdbcf7b02aee5242eda5f847322/image_2fee27c2-0630-4094-be31-71475768cca6.jpg)
Huzzah! Adafruit.io Internet of Things Feather ESP8266 [WiFi Starter Kit]
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OK you've signed up for Adafruit.io and you're ready to build something cool and Internet-connected. All you need is this starter kit which will get you going with lots of parts that go very well with our service and are the most common sensors and actuators you may want. Sense light, motion, ...
RGB LEDs 10mm x 20
Check out these big 10mm through-hole LEDs! The clear epoxy package causes these LEDs to have a bright glow. Features: Forward Voltage (R/G/B): 2.0 / 3.2 / 3.1V Forward Current: 20mA Intensity (R/G/B): 550 / 250 / 700 mcd Common Cathode This is a bag of 20 RGB LEDS
Dark Blue DSA Keycaps for MX Compatible Switches - 10 pack
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Dress up your mechanical keys in your favorite colors, with a wide selection of stylish DSA key caps. Here is a 10 pack of dark blue DSA keycaps for your next mechanical keyboard or NeoKey project. Snap 'em onto any Cherry MX or compatible switch to turn your Feather ...
Clear Keycaps for MX Compatible Switches - 12-pack
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A 12-pack of clear DSA keycaps for Cherry MX and compatible switches. The transparent design allows RGB backlighting to shine through clearly, making them ideal for custom keyboards, NeoKey projects, and macro pads where per-key lighting matters. DSA profile keycaps are fully symmetric in all fo...
