I am spending lot of time with development coin battery powered devices.
I have full desk of batteries, I try solve this mess with 3D printed battery holder. It is good for organisation but after time I see that it is just only dust collector. If I need charged this chaos I used some USB hubs, then I have desk full with cables and chargers.
Here is solution for 2 battery chemistry.
- 6 independent charging channels for LIR2032 battery with 6 charging controllers
- charging feedback with 12 LEDS
- 6 independent charging channels for ML2032 (LMR2016) battery with trickle charging regulator
- ML part have no full charge feedback, just leave battery about 24 hours or more in charger
- powered with single micro USB connector
10x10 cm
-Both charging block are designed to keep specifications for LIR and ML charging
I was not aware of any offered for sale, since contacting personally a number of China importers, every denied such rechargeable coin battery to ever exist.
I sold about 500pcs of my chargers and nobody report problem. You can found on ebay cheap coin cell chargers but they parameters are far away manufacturer spec.
Try search on ebay directly for LIR2032 an ML2032 batteries, they have different advantages, voltage and chemistry.
Just removed coin battery from my K750 solar keyboard bty logitech www.logitech.com/k750. Battery comes with yellow round sticker on top side, warning sign and caption: logitech.com/k750/support DO NOT REPLACE BATTERY. I am just removing yellow round sticker to read what is pressed or printed under it. MAXELL ML2032 3V + Rechargeable Japan. Eureka. Great success. My first ML2032 3V for the collection and solar keyboard can serve as a charger. I need to get 10 more solar keyboards by logitech since I plan to stack 4 x ML2032 3V together in series to build 12V power bank. Any idea ?
Thank you.
I was not aware of any offered for sale, since contacting personally a number of China importers, every denied such rechargeable coin battery to ever exist.
https://www.ebay.com/sch/i.html?_nkw=rechargeable+button+cell
Now I aware of, they were wrong, but it's an easy guess, why they don't import rechargeable coin batteries, since price is still prohibitive
Your project is great success, just look what is offered by your competitor and at what price:
from
http://store.eleksmaker.com/index.php?route=product/product&path=107&product_id=206
LIR2032 Charger
Product Code:LIR2032
Availability:10000
$25.00