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Lipo battery - 3.7v 250mAh

Lithium Ion Polymer (Lipo) battery - 3.7v 250mAh

€9.58 (tax incl.) €7.92 (tax excl.)
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A 250mAh miniature Lipo battery for your wearable project

Lithium ion polymer batteries (also known as 'lipo' or 'lipoly') are thin, light and powerful. The output voltage evolves in the range of 4.2V when fully charged up to 3.7V. This accumulator has a capacity of 250mAh.

If you need a more powerful accumulator, see our range of Lipo batteries.
This battery is rather intended for the realization of highly embedded project and reasonable in consumption. It will be an ally of choice for Trinket, Flora/Gemma, Wattuino animating frinkling projects or even animated/interactive "jewels" based on Leds or NeoPixel (intelligent RGB Led).

The accumulator is delivered with a 2-pin JST-PH connector (see image) and has the necessary protection circuitry. Thanks to their real JST connector, not a compatible version, the connection/disconnection will therefore be smooth and you are safe from cable snatching, correct connection problems, more or less suitable insertions.

The protective circuitry prevents the battery voltage from climbing too high (over-charge) or too low (over-use/over-discharge) which means that the battery will automatically cut off when it is completely dead and reached 3.0V voltage. It will also protect the battery against short circuits. However, even with these protections it is very important to use ONLY a LiIon/LiPoly charger with constant current/constant voltage with a recharging current of 125mA large maximum (or less preferably). Exemple of LiIon/LiPoly constant-current/constant-voltage charger. The recommended recharging current for this accumulator is 50mA. Recommended discharge current 125mAh.

For this accumulator, we recommend the use of the Lipo USB mini charger which has a charge rate of 100mA by default. Like most LiPos, this battery doesn't have a built-in thermistor. This is the reason why it is suggested to recharge at max 1C (or even less). 100mA is a good rate to start with and available on any USB port (if using a Lipo USB charger).

Additional safety note: Don't use a NiMH/NiCad charger/acid battery! Likewise, don't abuse this type of accumulator, don't short-circuit, twist, crush or pierce. As with all Lithium Ion polymer batteries and any type of power source - they should only be used by experienced people (experts) who are comfortable with the power supplies.

For electronic application only

These accumulators are designed for electronic project power and not for motor propulsion. The accumulator is equipped with a protection circuit deactivating the battery if its voltage drops below 3V or if the debited current is too high.
The discharge current of this type of accumulator is 0.5C to 1C MAX!
For example: a 500mAh 1C accumulator could produce a current of 1x500mA = 500mA max.

If you need to motorize a project, you must look for model batteries capable of delivering several C. In fact, starting a motor creates a very large current draw (close to the short-circuit current), you therefore need a suitable accumulator.
Some batteries for model making are capable of delivering up to 35C!
Ex: a 2500mAh 35C accumulator could produce a current 35x2500mA = 87500mA = 87.5A without flinching! Enough to start any type of motor.
Please note, however, these accumulators have no protection and can therefore catch fire if they are not used/charged/discharged correctly.

Détails techniques

  • Weight: 4.65g
  • Size: 27mm x 21mm x 5mm
  • Output: 125mAh a 3.7V (nominal voltage)
  • Charging voltage 4.2V, nominal voltage 3.7V, cut-off at 3.0V
  • Recommended charging current: 50mA
  • Max charge current: 125mA
  • Recommended discharge current: 125mA
  • Max discharge current: 250mA
  • Impedance: 60mOhms @ 1Khz
  • Operating temperature: from 0 to 55°C in charge, -25 to 60°C in discharge
  • Capacity loss of around 20% after 500 charge and discharge cycles


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