Mac not charging

My mac has been having trouble charging. I've recently bought a new battery and now also a new adapter for charging. However, the icon still reads 'Not Charging' and I don't think I've seen the light on the charger turn green yet (or even orange for that matter).

I've reset SMC, but I'm not sure how I can recalibrate the battery because it's never actually charging. So I can't charge it fully and then let it drain completely.

Battery Information:

Model Information:

Serial Number: W032301KZ6GOA

Manufacturer: SMP

Device Name: bq20z951

Pack Lot Code: 0

PCB Lot Code: 0

Firmware Version: 002a

Hardware Revision: 000a

Cell Revision: 100

Charge Information:

Charge Remaining (mAh): 2659

Fully Charged: No

Charging: No

Full Charge Capacity (mAh): 4343

Health Information:

Cycle Count: 64

Condition: Normal

Battery Installed: Yes

Amperage (mA): 146

Voltage (mV): 11696

I have also noticed that between me resetting SMC the mAh has gone from 2000-something to the 4343 it now is. I've read somewhere that as it gets closer to 5000 you should think about purchasing a new battery, but the one I've got now is only a couple of months old. I really hope someone can help me out, it's quite inconvenient to have to be connected to a charger the entire time.