# Makerverse USB-C LiPo Charger **URL:** \ **Category:** Product Questions\ **Created:** [21 March 2024 00:09 UTC](https://forum.core-electronics.com.au/t/makerverse-usb-c-lipo-charger/19458 "2024-03-21T00:09:38Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Jeff-007](https://avatars.discourse-cdn.com/v4/letter/j/e8c25b/32.png) [@Jeff-007](https://forum.core-electronics.com.au/u/Jeff-007)\ **Post date:** [21 March 2024 00:09 UTC](https://forum.core-electronics.com.au/t/makerverse-usb-c-lipo-charger/19458/1 "2024-03-21T00:09:38Z")
I recently purchased the MKRVRS Lipo charger and decided to test it out just the other day. I have a 5V 2A wall adapter which I use for all my powering my SBCs, as well as a 3.7V 3800mAh LiPo battery. When I plugged the device into the wall adapter the led turned on, so far, all seemed good. But when I inserted the LiPo onto the other end the LTH7R immediately started smoking. The dip switches were in the default factory state which I thought is set to charge at 500mA? I checked the battery and its outputting 3.7V. Unfortunately the board is now dead, so I’m wondering what the go is - what might have caused the LTH7R to smoke a cigar on my desk. any help/thoughts would be greatly appreciated thanks! ---
**Author:** ![Michael](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/michael/32/3545_2.png) [@Michael](https://forum.core-electronics.com.au/u/Michael)\ **Post date:** [21 March 2024 01:54 UTC](https://forum.core-electronics.com.au/t/makerverse-usb-c-lipo-charger/19458/2 "2024-03-21T01:54:25Z")
Hi @Jeff-007 - welcome to the forums Please reply to your order confirmation email with a couple of photos highlighting the fault. We’ll get this sorted 🙂 ---
**Author:** ![Jeff-007](https://avatars.discourse-cdn.com/v4/letter/j/e8c25b/32.png) [@Jeff-007](https://forum.core-electronics.com.au/u/Jeff-007)\ **Post date:** [21 March 2024 02:17 UTC](https://forum.core-electronics.com.au/t/makerverse-usb-c-lipo-charger/19458/3 "2024-03-21T02:17:34Z")
Hi Michael, thanks very much, will do! thanks Jeff ---
**Author:** ![James46717](https://avatars.discourse-cdn.com/v4/letter/j/e5b9ba/32.png) [@James46717](https://forum.core-electronics.com.au/u/James46717)\ **Post date:** [22 March 2024 04:04 UTC](https://forum.core-electronics.com.au/t/makerverse-usb-c-lipo-charger/19458/4 "2024-03-22T04:04:55Z")
The factory state for the DIP switches is 50mA. I have come across some LiPo’s where the +ve and -ve are reverse to what is considered normal. Check you have the right polarity. The only reason I can see for the LTH7R to smoke is reverse polarity. I have a number of these boards and they work well on all current ranges and all states of LiPo charge. Regards Jim EDIT: one of the 3.7V 3800mAH LiPo’s I checked, on ALI Express, the pic shows the polarity is reversed to what I have on the ones from Core Electronics. ---
**Author:** ![Michael](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/michael/32/3545_2.png) [@Michael](https://forum.core-electronics.com.au/u/Michael)\ **Post date:** [22 March 2024 04:54 UTC](https://forum.core-electronics.com.au/t/makerverse-usb-c-lipo-charger/19458/5 "2024-03-22T04:54:20Z")
Hi @James46717 - you’re dead-on the money. Reversed battery polarity is certainly something to watch out for! The industry has not standardised around a polarity for JST connected batteries. ---
**Author:** ![Jeff-007](https://avatars.discourse-cdn.com/v4/letter/j/e8c25b/32.png) [@Jeff-007](https://forum.core-electronics.com.au/u/Jeff-007)\ **Post date:** [22 March 2024 07:43 UTC](https://forum.core-electronics.com.au/t/makerverse-usb-c-lipo-charger/19458/6 "2024-03-22T07:43:29Z")
Thanks @James46717, and @Michael, this was in fact the issue. Thanks for helping me get to the bottom of what is my first embarrassing post to the forums! At least I now know to be more aware of the differences with these batteries. Last thing I want is a Lipo detonating on my desk. I went ahead and reconfigured the battery polarity and my second MKRVRS Lipo charger seemed pretty happy. cheers! Jeff ---
**Author:** ![lia262073](https://avatars.discourse-cdn.com/v4/letter/l/94ad74/32.png) [@lia262073](https://forum.core-electronics.com.au/u/lia262073)\ **Post date:** [24 March 2024 10:11 UTC](https://forum.core-electronics.com.au/t/makerverse-usb-c-lipo-charger/19458/7 "2024-03-24T10:11:25Z")
The voltage output from the wall adapter may have been higher than expected or fluctuated, causing the LTH7R to receive too much voltage and overload.