Batteries/Chargers/Holders

 

9v 800 mAh lithium USB Rechargeable Battery

Shaped like a normal 9v battery this unit provides approximately 8.2v at full charge and operates like any normal 9v battery cell. The only exception is that this unit is rechargeable! Plug in a micro USB port in the back to charge with your computer, the side indicator will show you the current charge of the unit. Please do take precaution and prevention from wire shortage and paying attention to polarity. Lithium batteries can explode from pressure, heat or voltage short.

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IMAX B6 LiPro Balance Charger + AC-DC Adapter

It is a very advanced smart charger for your LiPo/LiFe, NiCd and NiMH Batteries, capable of  managing 6S Li-ion/LiPo/LiFe and 15S NiCd/NiMH. The Display and straightforward controls make charging high volatile batteries safe and easy. Simply plug in a 12v DC power source up to a maximum of 5A on the right side and connect your battery with the balance cells (if needed) on the left side.

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US$2.79
Connect the positive and negative terminals of the display board and connect them to the positive and negative terminals of the tested battery. The digital display shows the real-time battery power shown by the indicated bars.
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US$3.41
Connect the positive and negative terminals of the display board and connect them to the positive and negative terminals of the tested battery. The digital display shows the real-time battery power shown by the indicated bars.
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US$0.69
This is a nickel plated single aluminum clip for AA /CR2 type batteries. Features Material:  .020” (.51mm) Aluminum 2 mounting holes....
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US$1.76
4 x AA Cell Battery Holders with DUPONT Male Connector
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US$1.25

This tiny blue board is what you usually find in power banks. This board allows the user to charge their battery system using the USB female port and MicroUSB works as the discharging port. The battery is connected from the top pads on the bottom which indicate B+ and B-. To be safe, you can use the battery holder for the 18650s and solder the wires to the board.

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US$18.75
3.7V lithium batteries are commonly used in many projects. However, the remaining power and voltage of the lithium battery are highly nonlinear. We can only roughly judge whether the battery is full or almost empty according to its voltage. The Gravity I2C 3.7V Lithium Battery Fuel Gauge employs Gravity I2C interface, ultra-low operating current, and real-time tracking of the relative state of charge (SOC) of the battery through Maxim's patented algorithm, eliminating the need for full-to-empty relearning and offset accumulation errors. Plug and play to accurately measure the voltage and remaining power of the battery. The module also features as a low battery power alert interrupt function. When the battery power falls below specified threshold, the ALR pin generates a falling pulse to trigger the external interrupt of the controller.
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US$9.94
This charger is capable of charging one or two 9V style LIPO/NI-MH/ NICD batteries. It can provide a maximum of 1A current output and is programmed to cut off or lower current when required.
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US$1.81
The 150-337 is a four "AA" Cell Battery Holder with solder tab terminal connection. The cable is about 150mm long with a JST SM male plug.
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US$9.09
Still using a big, bulky, traditional power adapter to charge your lithium battery? DFRobot provides you with a compact and efficient 7.4V lithium battery USB charger, only the size and weight of an ordinary Gravity sensor. With just a mobile phone AC adapter (or power bank) and an Android data cable, you can safely and efficiently charge the 7.4V lithium battery up to 1A, which commonly used in various robots and motor drivers. The light-weight and micro USB interface features make it ideal for outdoor applications. In addition to serve as a charger, it can also be embedded in a variety of 7.4V lithium battery-powered projects, adding a USB charging function to it, eliminating the need for battery swapping and the use of traditional bulky power adapters.
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US$18.15
This is a useful inexpensive tester for car battery state, alternator state as well as OK to charge battery state. Has a 6-LED display that clearly presents the alternator and battery states. Large insulated ground battery clamp and needle test tip makes it easy to use. Compact and light weight, easily can be kept in car. Suitable for 12V lead acid batteries, hardtop batteries, discharge batteries and maintenance free batteries.
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US$12.53
This is a 2 cell lipo battery that is in the shape of a regular 9VDC battery (type PP3). It reaches 8.4VDC when fully charged.  Use a charger that is capable of charging two cell batteries.
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US$0.98
This is a CR2032 battery holder that can be soldered to a PCB. Perfect for robotics and electronic projects that use CR2032 battery power.
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US$0.49
This is a dual AA battery connectors pack for your DIY battery holder. It consist of one main + and – connector along with two independent terminal connectors; one for + and one for - .
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US$1.39
This is a simple coin cell battery holder that can enclose two CR2032 batteries inside itself, and safely kept closed via two Philips head screws. Each battery holder is equipped with an On/Off slide switch and two 6" power wires (one positive and one negative) on the back.
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US$4.55
This battery holder connects 3 AAA batteries together in series for powering all kinds of projects. We spec'd these out because the box is slim, and 3 AAA's add up to about 3.3-4.5V, a very similar range to Lithium Ion/polymer (Li-Ion) batteries, plus it has a nifty on-off switch. That makes them ideal for use with 3.3V projects that have a 2-pin JST connector meant for one of our Li-Ion/Poly batteries. (Of course, you can't recharge them like Li-Ion/Polys, so don't try to plug this into one of our Li-Ion/Poly charger boards!) It also features an ergonomic belt clip for taking your power on the go.
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