Power

We offer a wide range of single cell Lithium ion polymer (also known as 'lipo' or 'lipoly') batteries, that are thin, light and powerful. The output ranges from 4.2V when completely charged to 3.2V. While the nominal voltage of the battery remains at 3.7V, which is also a safe voltage to store the battery at.  The batteries have come with either a 2-pin JST-PH connector or "no connector" and include the necessary protection circuitry. The included protection circuitry keeps the battery voltage from going too high (over-charging) or low (over-use), which means that the battery will cut-out when completely dead at 3.0V. It will also protect against output shorts. However, even with this protection it is important to use a LiIon/LiPoly constant-voltage/constant-current charger to recharge and at a rate of 2A or less (500mA is best). We suggest our Micro Lipo charger, which has a 100mA default rate. You can also set the Micro Lipo to 500mA rate for a faster charge. NOTE: We can provide custom LiPo batteries for BULK orders on demand. Please contact us for a quote.  Physical Dimensions In order to facilitate accurate use of these batteries, and help the use with optimum enclosure design, we are providing below, the right cube size needed to house each battery: 30mAh: 15.40mm X 10.10mm X 4.10mm 160mAh: 20.30mm X 10.20mm X 4.10mm 250mAh: 27.60mm X 9.05mm X 4.0mm 350mAh: 31.70mm X 19.75mm X 4.40mm 400mAh (Square design): 30.60mm X 19.60mm X 4.50mm 400mAh (Narrow design): 46.80mm X 8.90mm X 4.80mm 450mAh (Narrow design): 43.00mm X 9.40mm X 4.80mm 500mAh: 37.50mm X 25.10mm X 3.95mm 1000mAh: 49.40mm X 32.20mm X 4.10mm 1,950mAh: 61.80mm X 43.40mm X 6.0mm 3,000mAh: 64.80mm X 49.50mm X 4.90mm 3,500mAh: 77.20mm X 63.10mm X 3.60mm     Tutorial

These lithium-ion batteries come in a variety of configurations and capacities. The battery with a protection circuit provides over-voltage, under-voltage, and over-current protection. Yet, it is slim and easy to fit into many project cases. These batteries do not come with protection circuitry. It is very important that you only use a LiIon/LiPoly constant-voltage/constant-current charger to recharge them and at a rate of 0.5C (1 Amp) or less and add a separate protection circuitry.   If you want batteries with protection, you can buy one here!Additional safety notes: Do not use a NiMH/NiCad/lead-acid charger! Also, do not abuse these batteries, do not short, bend, crush, or puncture. Never charge or use unattended. Always inspect batteries and surrounding circuitry constantly for any damage, loose wiring, or the possibility of short circuits. Polarity matches all Adafruit LiPoly/LiIon chargers and boards, other brands may have reverse polarity and can destroy your battery. As with all Lithium-ion polymer batteries and with any power source - they should be used by experts who are comfortable working with power supplies Specifications 2600 mAh  Nominal Capacity: 2600 mAh Minimum Capacity: 2500 mAh Nominal Voltage: 3.7V Charge Voltage: 4.2V Continuous Discharge Current (max.): 5A Operating Temperature: 0℃ - 45℃ Internal Resistance ≤ 40mΩ @ 1kHz AC 2000 mAh Nominal Capacity: 2000 mAh Minimum Capacity: 1900 mAh Nominal Voltage: 3.7V Charge Voltage: 4.2V Continuous Discharge Current (max.): 3.8A Operating Temperature: 0℃ - 45℃ Internal Resistance ≤ 40mΩ @ 1kHz AC 1500 mAh Flat Top Nominal Capacity: 1500 mAh Minimum Capacity: 1450 mAh Nominal Voltage: 3.7V Charge Voltage: 4.2V Maximum Discharge Current: 1.5A Operating Temperature: 0℃ - 45℃ Internal Resistance ≤ 20mΩ @ 1kHz AC

100% brand new and high quality Charge module: Linear charging Current: 1A adjustable Charge precision: 1.5%. Input voltage: 4.5V-5.5V Full charge voltage: 4.2V LED indicator: Red is charging. Green is full charged. Input interface: Micro USB Working temperature: -10° to +85° Inversed polarity: NO Ampere meter can only be connected to 5v input end of the module. It is better that the charging current is 37% of the battery capacity. If you charge to the battery of 1000mAH, current of 400 is enough. The connection wire should not be too thick. Make sure the connect point is good. If the input voltage is too high, like 5.2v, the current will be less than 1000mA, it is normal. It is protection function, auto-substract the charging current to avoid burn damage to chip. NO Reveral polarity. Specifications Resources Datasheet Tutorial

This lithium ion battery with capacities of 500mAh and 700mAh.  It is slim and easy to fit into many project cases. The batteries are unprotected and best work with out 16340 Battery Shield and 16340 Arduino Shield. Like most lithium-ion packs, the batteries we sell do not have thermistors built in. This is why we suggest charging at 1/2C or even less - 0.5A max in this case. Of course, you can charge at a lower rate - it'll just take a little longer to fill up.Additional safety notes: Do not use a NiMH/NiCad/lead-acid charger! Also, do not abuse these batteries, do not short, bend, crush or puncture. Never charge or use unattended. Always inspect batteries and surrounding circuitry constantly for any damage, loose wiring, or possibility of short circuits. Polarity matches all Adafruit LiPoly/LiIon chargers and boards, other brands may have reverse polarity and can destroy your battery. As with all Lithium ion polymer batteries and with any power source - they should be used by experts who are comfortable working with power supplies. NOTE: Batteries once sold are non-returnable and non-exchangeable. Specifications Storage Voltage: 3.85V - 3.95V Nominal Capacity: 900 mAh @ 0.2C discharge; 720 mAh @ 0.5C discharge Nominal Voltage: 3.7V Discharge Cut-Off Voltage: 2.75V Charge Voltage Limit: 4.2 ± 0.03V (0℃ - 45 ℃) Standard Discharge Current: 375mA (0.5C @  0℃ - 45 ℃) Maximum Charge Current: 750mA (1.0C) Maximum Discharge Current: 1.6A (2.0C) Internal Impedance ≤20mΩ at AC 1kHz Weight ~22.0g Tutorial

Details:Input voltage: DC 5VOutput voltage: DC 12VMax input current: 2AMax Output current: 500mA to 1000mA Specifications Tutorial

This is a super mini Solar Lipo charger based on the CN3065 - a single lithium battery charge management chip. This Solar charger provide you with the ability to get the most possible power out of your solar panel or other photovoltaic device and into a rechargable LiPo battery. Set-up is easy as well, just plug your solar panel into one side of the Solar charger and your battery into the other and you are good to start charging! The output of the Solar Charger is intended to charge a single polymer lithium ion cell. The load should be connected in parallel with the battery. By default, the Solar charge comes set to a maximum charge current of 500mA with a maximum recommended input of 6V (minimum 4.4V). It's recommended that batteries not be charged at greater than their capacity rating. Features: Solar panel input: 4.4-6V Max charge current: 500mA Interface: 2-pin JST connectors(or PH2.0) Short circuit protection Continuous Charge Current Up to 500mA Battery status indication ( Red : Charging , Green: Charged ) Support USB Charge (Micro-USB Connector) Specifications Resources Datasheet Tutorial

This module is a portable mobile power supply that supports 3V / 1A and 5V / 2.2A two kind of voltage outputs. 5V voltage output rated current is 2.2A, maximum support 3A current (not recommended for overload, easy to damage the module, speed up the service life), the output of current depends on the quality of the 18650 battery.Micro USB/Type-C charging current 600mA-800mA, supports up to two 18650 batteries. It is recommended to use two 18650 batteries, which can be longer. Special attention: the installation of the battery must be determined positive and negative, the board has been clearly marked positive and negative! Installation errors will burn out the module.   Specifications Battery protection(Over charge or Over discharge) Micro USB/Type-C port Input Type-A USB Output 0.5A current charging 1 switch control USB output 5 -8V Input Voltage 3V & 1A Output 5V & 2A Output LED indicate(Green means full,Red means charging) 3V output port x5 5V output port x5 Be careful of "+" and "-", You should follow the direction of "+""-" on the PCB. If you put wrong direction, charging chip will be destroyed.

A modular charging / discharging control board for 3.7V Lithium Battery powered mobile power banks.  Output: DC5V/2A max, input DC5V/1A, Android line interface Battery voltage: 3.7-4.2 lithium battery B- Negative  B+Positive Size: 7.1x1.6cm/2.80x0.63inch Note: the battery must be in parallel rather than in series. Test voltage before installation. One bad battery will affect the whole group battery. Recognize the positive and negative. If you put them in the wrong position, mainboard IC will be destroyed. To avoid damaging the motherboard, exposed part of the wiring must be wrapped well! Specifications   Tutorial

These battery holder cases can hold one or two 18650 battery and can be used as in both 3.7v and 7.4v setup. It can hold standard 18650 size batteries, either alkaline or rechargeable batteries, the pin design is great for easily soldering and connecting. Battery Type: 1 cell and 2 cell 18650 Battery Material: Plastic and Mental Color: Black Specification 18650 Battery Holder Leads: all AA battery case holder with leads, they are tinned wire end 18650 Battery Holder Wires Length: 5.9"/15cm 18650 Battery Holder Wires Diameter(count in the PVC isolation around the wire): 0.0393"/1mm 18650 Battery Holder Cable Color: red and black Battery Holder Pack Color: black Material of Battery Holder: plastic ABS Tutorial

We offer a variety of AA Battery Packs ranging from Single AA Battery Holder to 8 AA Battery Holder. Make a portable power brick. Use Alkaline AA's for up to 12V 3000-4000mAh power supply, or rechargeable NiMH for 2000mAh 9.6V supply. Either one is good for running electronics that have a 5V voltage regulator (thus requiring a 7V+ supply) or perhaps some motors or solenoids.Perfect for portable Arduinos, motors, solenoids, 12V LED strips, etc. An On/Off switch lets you control the power right at the source without unplugging. Batteries not included, may or may not include screws. Details: Dimensions: 127mm x 71mm x 19mm / 5" x 2.8" x 0.76" Weight (without batteries): 75g Specifications Tutorial

Dual USB Charging Control Board for mobile power banks. The LCD Display module provides charge status. The module provides overload protection, over-discharge protection and overcurrent protection. Specification: Micro USB input: 5 V 1A USB output: 5V 2.1A / 5V 1A (Dual USB interface) Charging screen: intelligent digital screen Type of batteries: liquid lithium ion batteries (18650) Product size: 57mm x 28mm Screen size: 27mm x 17mm Input Voltage: 3.7V Installation instructions: The circuit board is connected to the negative battery B-, B is positive Check polarity, wrong wiring will burn the board. the battery is connected in parallel welding.  There is insulation between the battery and the circuit board The battery can not touch the circuit board, may cause short circuit if it does. Specifications Resources Datasheet Tutorial

Fixed 5V Output Boost Regulator (step-up regulator) Module with standard USB Connector. Accepts Input voltage from 0.9V to upto 5V. Ideal for powering 5V USB devices from lower voltage batteries like 16340 or AA batteries.  Description: On-board CE8301 Chip Input voltage: 0.9V-5V DC PFM Control DC-DC Converter Transfer efficiency: 96%(max) With USB port With working indicator light with one AA battery power supply output current can be up to 200~300mA, two AA batteries to the output current of 500~600mA On board LED indicator that indicates if Load is connected.   Specifications Tutorial  

The light threshold can be adjusted by the potentiometer to set the relay to start. Input: DC 5V / 12V Load capacity: 10A / AC 250V or DC 30V Red LED lights up: indicates power is on Blue LED lights up: relay is working Module output terminal has three ports Normally open (NO) Public terminal (COM) Normally closed (NC) Specifications Resources Datasheet Sample Code Tutorial  

Details: Product name: DC step-down module Converter Voltage regulating mode: PWM modulation Input voltage: DC4-40V Output voltage: DC1.25-36V Max output current: 8A (more than 5A for long time use,need Fan if over 5A) Max power: 200W Conversion efficiency: 94% Switching frequency: 180KHZ Dimensions: 61*41*27mm Specification Resources Datasheet Tutorial