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Robu.in Does Not Recommend Imax B3 Charger From Us or From Anywhere Else, Only Buy This Charger if You Have Very Short-term Usage. Consider Buying Other Chargers for Better Performance and Good Battery Life.
Here is the Link for  Skyrc E3 Ac 2s~3s Li-po Battery Balance Charger (V2) (Original)
B3AC Compact Charger is a Simple and Compact Lipoly Balance Charger for 2~3s Batteries. It Features Built-in Jst-xh Balance Plug Ports and 3 Leds to Indicate Charge Status. B3ac Makes an Ideal Pocket-sized Charger to Keep in Your Field Box.

15 Days WarrantyThis Item is Covered With a Standard Warranty of 15 Days From the Time of Delivery Against Manufacturing Defects Only. This Warranty is Given for the Benefit of Robu Customers From Any Kind of Manufacturing Defects.  Reimbursement or Replacement Will Be Done Against Manufacturing Defects.
What Voids Warranty:If the Product is Subject to Misuse, Tampering, Static Discharge, Accident, Water or Fire Damage, Use of Chemicals & Soldered or Altered in Any Way.

Product Specification Product DescriptionProduct Description:

This step-down (buck) power supply module converts its input voltage of 6V to 24V to a fixed 5V USB output at up to 3A continuous output current.

It is ideal for providing a regulated 5V USB output to charge your iPhone, Android phone, tablet or any other USB-powered device. It can be powered from a 6V, 9V, 12V or 24V battery, solar panel, wind generator or other power source.

Specifications:

• Small size, 26.4 (L) * 15 (W) * 7.4 (H) mm
• Input with reverse polarity protection diode, will not damage when input connect incorrect
• Ultra-low static current, 0.85 mA only.
• Module Parameters:
  • Module Properties: non-isolated buck module (BUCK) synchronous rectification
  • Input voltage: DC 6-24V  Output voltage: 5.1-5.2V
  • Output current: 3A MAX (please enhance heat dissipation when full load using), the actual test result input 12V output current 2A do not need to enhance heat dissipation.
  • Conversion efficiency: can up to 97.5% (6.5V step down to 5V 0.7A) (after short reverse protection and fuses test value)
  • Switch frequency: 500KHz
  • Output ripple: 10mV around (12V to 5V3A) 20M bandwidth
  • Output indicator: Output voltage indicator is red
  • Operating temperature: Industrial grade (-40 ℃ to + 85 ℃) (the higher the ambient temperature, the lower the output power)
  • Output over-voltage protection: Yes, input 1.5A fuse, output 5V have 300W TVS tube clamp protection.
  • Full load temperature: 30 ℃
  • Static current: 0.85 mA
  • Load regulation: ± 1%
  • Voltage Regulation: ± 0.5%
  • Dynamic response speed: 5% 200uS
  • Output short circuit protection: Yes, but please do not short circuit for a long time
  • Input reverse polarity protection: Yes, there is reverse polarity protection diode
  • Output mode: USB

Additional Information