MDEK1001 Tag Recharging Using Microusb and Adapter

Wireless Connectivity Ultra-Wideband
1

Hi all,
We plan to put a 16340 battery inside MDEK1001 plastic housing and use an adapter(110 to 5V 2700mA ) to recharge it through microusb port.
Does MDEK1001 have overcharge protection circuit, or we should buy a specific adapter with overcharge protection circuit to recharge 16340 battery through microusb port?
Thank you!
Jeremy

2

Hi @jeremykuo
the DWM1001-MDEK is development kit and there is a lipol charger onboard. However there is no additional battery protection circuit!!!

You are mentioning 16340 battery - could you be a more specific about the type? Some of 16340 are non-rechargeable and the rechargeable are typically with integrated USB charger so be careful about the battery the you use.

Cheers
JK

3

Hi JK,
Thank you very much for your reply.
The spec of 16340 is as follows.
UltraFire LC 16340 1000mAH.
https://shopee.tw/神火-Ultrafire-16340-CR123A-1200mAh-3.6v-3.7v-充電鋰電池單一價格(無保護板)-i.5199921.498761841
It can be recharged, but the spec said it has no protection circuit.
Can we buy a usb adapter with overcharge protection to recharge it through microusb?

Thank you!
Jeremy

4

Hi @jeremykuo
there is a couple things that seems to be weird:

  1. CR123 - is uncommon marking as typical marking is CR123A (3V non rechargeable) or RCR123A (3.7V rechargeable).
  2. Battery capacity is 1000mAh but real capacity is 600mAh. However on battery label is 880mAh. So what is the real capacity?

As a conclusion it is probably RCR123A battery - rechargeable (because it is labeled 3.7V and 880mAh could be true).

Maybe try to look after FENIX RCR123A battery (ARB-L16-700U) it has USB charger implemented inside of the battery.

Cheers
JK

5

Hi JK,
Got it, thank you!
Jeremy