Hi friends. In this instructables we will be going to power the ESP8266 specifically the ESP8266-01 module with battery. According to my experience, many people had the problem with powering the module with a battery as there is no battery available which can give out 3.3 volts. Or they powered the module with the hellp of voltage regulators like HT7333, SJ111733pi, LD1117v33 or LT1086-3.3. This instructable shows how to power the ESP using AA batteries. So lets start !!!

Step 1: Specifications of the ESP8266-01 -

The most important feature is that the ESP does not require perfect 3.3 volts. You can power it within a voltage range of 1.7 volts to 3.3 volts. This means that you can power the ESP8266-01 using two AA batteries of 1.5 volt which will give 3 volts to the ESP8266 which is enough for the functioning of the module.

Other specifications are -

802.11 b/g/n protocol

Wi-Fi Direct (P2P), soft-AP

Integrated TCP/IP protocol stack

Integrated TR switch, balun, LNA, power amplifier and matching network

Integrated PLL, regulators, and power management units

+19.5dBm output power in 802.11b mode

Integrated temperature sensor

Supports antenna diversity

Power down leakage current of < 10uA

Integrated low power 32-bit CPU could be used as application processor


STBC, 1×1 MIMO, 2×1 MIMO

A-MPDU & A-MSDU aggregation & 0.4µs guard interval

Wake up and transmit packets in < 2ms

Standby power consumption of < 1.0mW (DTIM3)

Step 2: The Connection -

Of course the connection is very simple.

1) The Batteries -

|---------------------------| |--------------------------|

+ [| 1.5 volts -- | [| + 1.5 volts -- |

|_________________| |________________|

Connect the batteries in series to get 3 volts.

2) The ESP8266 -

Connect the VCC of the module to the positive of one battery. And the GND of the module to the negative of the other battery.


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