For example the product like this picture will not work for blackberry, because it doesn't have enough electric current for charging blackberry battery.
|has limit /smal electric current|
The solution, you can use converter module 0.9-5V to 5V 600 mA that can drive or charge the bigger mAh battery
|Converter DC to DC 0.9-5V to 5 V 600 mA|
You can use 2 or 3 AA batteries to get the ideal electric current. or you can use other types of battery, the important thing you must remember that the maximal voltage input is 5 Volt
I buy this product from Aliexpress.com, the price is around $ 1 US, the complete link is :
or you can search on the internet for similar product .