# Notecarrier B: LiPo charging from Solar?

**URL:** <https://discuss.blues.com/t/notecarrier-b-lipo-charging-from-solar/1395>\
**Category:** Notecarrier B\
**Created:** [April 25, 2023, 5:44pm UTC](https://discuss.blues.com/t/notecarrier-b-lipo-charging-from-solar/1395 "2023-04-25T17:44:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gauteh](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/gauteh/32/269_2.png) [@gauteh](https://discuss.blues.com/u/gauteh)\
**Post date:** [April 25, 2023, 5:44pm UTC](https://discuss.blues.com/t/notecarrier-b-lipo-charging-from-solar/1395/1 "2023-04-25T17:44:42Z")

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Hi,

I’m currently on the Notecarrier B. I see it has both a LiPo connector (for something like [5,000 mAh LiPo Battery – Blues Wireless](https://shop.blues.io/collections/accessories/products/5-000-mah-lipo-battery)) and a charging LED. Can it charge from solar or is it only USB charging?

Do I need something like [Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://www.adafruit.com/product/4755) in between? I think I saw the charging chip name somewhere here as well so might be the same you are using.

I am concerned about whether the charger / LiPo setup can supply enough current.

Regards, Gaute

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**Author:** ![RobLauer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.blues.com/roblauer/32/1567_2.png) [@RobLauer](https://discuss.blues.com/u/RobLauer)\
**Post date:** [April 29, 2023, 9:20pm UTC](https://discuss.blues.com/t/notecarrier-b-lipo-charging-from-solar/1395/2 "2023-04-29T21:20:08Z")

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Hi @gauteh,

Unfortunately, no, the Notecarrier-B is not suitable for charging a LiPo via solar. The Notecarrier-B uses an MCP73831 which is not suited to the nature of solar panels, which generate extremely weak levels of charge current. The `SOLAR` input of the [Notecarrier-A](https://shop.blues.io/products/carr-al) is designed for this purpose, using a BQ24210.

Thanks,  
Rob
