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Description:

This PCB can stepup a lithium ion battery to 5V for USB output to 5V USB devices, like iphone, mobile phone, tablet PC. This module also contains protection circuit which will stop stepup output when Lithium ion battery is below 2.5V. Just connect a unprotected lithium ion battery to the battery input source.

There a blue backlight LCD which can show the battery level in %, charging status, and also the output USB current drawn by the USB device.

The LCD is controlled by a 12bit A/D to convert battery voltage level from 0% - 100% in 1% steps, to accurately show the battery capacity remaining or charged. <3.0V - 0% , 3.7V - 50%, 4.2V - 100%

This PCB also support charging the battery. Simply supply a 5V microUSB source to the charging input and it will charge the connected battery to 4.2V

Great for mobile power source using Lithium ion batteries (unprotected is also ok).

Connect multiple batteries to the battery input to increase the capacity power capacity

Procedure:

1. Connect 4.2V li-ion battery to the soldering point or the battery jack.

2. Activate the circuit by charging with a microUSB adapter

3. push the switch two consecutive times to activate the emergency LED lighting, push two times to deactivate it.

Connection please see the image , Never reverse the connection polarity.

Specifications:

Charging voltage input: 5V-6V 1A

Stepup voltage output: 5.15V 2.1A

Protection circuit: Overcharge protection:4.250V Overcharge protection release: 4.100V

Protection circuit: Overdischarge protection:2.900V Overdischarge protection release: 3.000V

Idle time before LCD switch off: 60secs

Idle current: 230uA

When stepup circuit is not activated due to protection circuit of the battery, simply release the protection circuit by inputing a 5V to charging terminals

65.2mmX17mmX17mm

With iPhone recognition circuit, support iPhone charging

LCD Backlight: Blue

Efficiency: >90%

Operating temperature -40C to 85C

Package Included:
1x Lithium ion Battery 5V 2.1A USB Boost Charge Board

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Shipping

> We Ship to Worldwide, except Hong Kong, Nigeria.....
> For Germany , default use "Economy shipping " ,normally need 12 ~ 40days to your country .
> Items are shipped from China using Airmail, items will be shipped within one business day on payment received . delivery time depends on destination and other factors,reach most of the countries within 10 to 35 business days.

*Country*	*Shipping Way*	*Shipping Time*	*Tracking Number*
United States	China Post	7-12	Yes
Russian	China Post	15-35	Yes
Other Country	HK /Swiss Post Air Mail	15-45	No
Brazil / Africa	HK /Swiss Post Air Mail	35-65	No

Returns

> Defect: We will fully refund or send you a new replacement,please contact and return within 14 days.
> Dissatisfaction: Please contact within 3 days, we will fully refund, after got your returned goods.
> Missing parts/Q'ty: Please contact us immediately,for a new package arranged,or a partial refund issued.

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