battery problem after replacing SSD MB PRO late 2012

Hi,

I replaced my SSD with a Jetdrive 720 SSD very carefully, following instructions.

Everything seems to work fine except for the battery.

Magsafe shows solid green light, but is not charging.

When I remove it my macbook shuts down immediately and powers up by itself when I plug it back in.

I have tried PRAM and SMC reset several times, not sure if the latter worked. (Magsafe light solid green, not changing)

SSD firmware is up to date. Verify disk reports no problem.

I have performed an extended hardware test which reported no problem.

(I'm assuming a logic board problem would have been reported, had I damaged the logic board during the process?)

What could I have done wrong? Is there anything I could try without having the battery replaced?

Thanks in advance for any advice!

Christine

Model Information:

Serial Number: D862431P2WSF9557V

Manufacturer: SMP

Device Name: bq20z451

Pack Lot Code: 0

PCB Lot Code: 0

Firmware Version: 511

Hardware Revision: 000a

Cell Revision: 1169

Charge Information:

Charge Remaining (mAh): 6153

Fully Charged: Yes

Charging: No

Full Charge Capacity (mAh): 6234

Health Information:

Cycle Count: 298

Condition: Replace Now

Battery Installed: Yes

Amperage (mA): 0

Voltage (mV): 12495