Factory Part Number:
587706-751
593572-001
BQ350AA
HSTNN-CB1A

Compatible Models:
Compaq 320
Compaq 321
Compaq 325
Compaq 326
Compaq 420
Compaq 421
Compaq 620
Compaq 621
HP 420
HP 425
HP 4320t
HP 620
HP 625
ProBook 4320s
ProBook 4321s
ProBook 4325s
ProBook 4326s
ProBook 4420s
ProBook 4421s
ProBook 4425s
ProBook 4520s
ProBook 4525s
ProBook 4720s

Shipping Information:
We ship to worldwide range and the shipping is also free unless you request express delivery. The delivery to US will take about 6-10 business days by DHL eCommerce, and to the other most countries usually takes about 7~14 business days.

All packages will come with a tracking number, you will get an email of shipping information including the tracking number once your order is shipped out from our warehouse.

Please find the detail of the express as below:

Express Company	Estimated Delivery Time	Cost
EMS	5-10 business days	$28
UPS/DHL/Fedex	3-6 business days	$30

If your address can't be reached by above express company, please contact us by order@battery-adapter.com and inform us of your express company.