Li-po 3-cell 1300mah battery
$12.50
Li-po 1100mah battery
$10.00
Bluetooth hc-05 module
$4.50
Lithium battery expansion board
$4.50
A 12V 1A adapter is a common power supply that outputs 12 volts at 1 ampere, meaning it delivers up to 12 watts of power (12V × 1A = 12W).
$3.50
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