Note:
1. The 7800mAh(9 Cell) battery will extend out about 1 inch from the bottom of the laptop.
2. 10.8V and 11.1V are compatible,and in common use.

These replacement HP HSTNN-Q78C batteries are the highest quality product which have obtained international certification( CE, UL, ROHS, ISO9001/9002 ). Without any memory effect, these batteries work as powerfully as an extra power supply when traveling or being away from the home/office. With long life, our high quality HP HSTNN-Q78C batteries can be charged/discharged for more than 500-750 cycles( has been rigorously tested ). Every piece of HP HSTNN-Q78C battery pack is under the united protection of the PCP board, PCM board, intellectual power measurement circuit : automatically adjusting the charging time to achieve the maximum amount of charge, over-charge protection, over-discharge protection, overcurrent protection, short circuit protection.

We offer superb pre-sales and after-sales service, providing full 1 year warranty for our HP laptop batteries and 30-days money back, 100% OEM compatible with the original battery. Our replacement HP HSTNN-Q78C laptop batteries have also undergone rigorous test to ensure stability and safety for users before being dispatched from the battery manufactory. Usually these 6 cell (10.8V, 5200mAh) and 9 cell(10.8V, 7800mAh) replacement HP HSTNN-Q78C batteries offer the same or even longer utilisation period as/than that of the original HP battery.

Thanks for buying HP HSTNN-Q78C battery at HPLaptopBattery.co.uk. In order to ensure the quality of this HP HSTNN-Q78C battery and get you a 100 percent satisfaction with our product, we will strictly test the product quality before shipment.

HP HSTNN-Q78C Battery Compatible Part No.

• 587706-121
• 587706-131
• 587706-221
• 587706-241
• 587706-251
• 587706-421
• 587706-541
• 587706-741
• 587706-751
• 587706-761
• 592909-221
• 592909-241
• 592909-421
• 592909-721
• 592909-741
• 593572-001
• 593573-001
• BQ350AA
• BQ350AA#ABA
• BQ350AA#AC3
• HSTNN-CB1A
• HSTNN-CB1B
• HSTNN-DB1A
• HSTNN-DB1B
• HSTNN-I85C
• HSTNN-I85C-3
• HSTNN-I85C-4
• HSTNN-I85C-5
• HSTNN-I86C
• HSTNN-I86C-3
• HSTNN-I86C-4
• HSTNN-I86C-5
• HSTNN-IB1A
• HSTNN-LB1A
• HSTNN-Q78C
• HSTNN-Q78C-3
• HSTNN-Q78C-4
• HSTNN-Q81C
• HSTNN-Q81C-3
• HSTNN-Q81C-4
• HSTNN-UB1A
• HSTNN-W79C
• HSTNN-W79C-5
• HSTNN-W79C-7
• HSTNN-W80C
• HSTNN-XB1A
• HSTNN-XB1B
• HSTNN-YB1A
• PH06
• PH06047
• PH06047-CL
• PH09
• PH09093
• PH09093-CL

HP HSTNN-Q78C Battery Fits Model

• 320
• 321
• 325
• 326
• 421
• 4320t
• 620
• 621
• 625
• Presario CQ321
• Presario CQ325
• Presario CQ326
• ProBook 4320s
• ProBook 4321
• ProBook 4321s
• ProBook 4325s
• ProBook 4326s
• ProBook 4420s
• ProBook 4421
• ProBook 4421s
• ProBook 4425s
• ProBook 4520
• ProBook 4520s
• ProBook 4525S
• ProBook 4720s

Some tips for increase the length of HP HSTNN-Q78C battery

1. Please carefully read the instructions before using the battery.
2. Before using the new HP HSTNN-Q78C battery for the first time, make sure that the battery is fully discharged and then get it charged for about 12 hours.
3. You'd better use a dedicated AC adapter when charging the new HP HSTNN-Q78C batteries.
4. You'd better turn off your HP laptop when the HSTNN-Q78C battery is charging; do not pull out the power plug or use your computer when charging.
5. If you don't use laptop for a long time, please remove the HP HSTNN-Q78C battery, and place it in a ventilated and dry place.
6.Excessively high or low temperature environment should be avoided when using the HP HSTNN-Q78C laptop battery, as the too low or too high temperature will affect the battery life.
7. Provided with best quality products at the best price as well as the best after sales service, you will be fully satisfied; if you have any questions or feedbacks about our HP HSTNN-Q78C battery or our services, please contact us directly; our customer service will reply you within 24 hours.

Your order will be processed within 24 hours, and we can delivery to Whole European Countries.

Payment Method		* Accepted
Credit Card		Accepted
PayPal		Accepted

Secure Transaction Process

1. Brand new,100% OEM compatible with the original HP HSTNN-Q78C battery.
2. Full One Year Warranty,30 Days Money Back policy in every product we sell. During the product warranty days, unartificial defective product is free to be replaced, and we will afford all shipping fee.
3. Hi-quality,CE, RoHS, UL and ISO9001:2000 certification for quality assurance,100% safe for use.
4. Guaranteed to meet or exceed original specifications.
5. Grade-A cells(PANASONIC) for our HP HSTNN-Q78C replacement battery pack.
6. Best quality products at the best price with best after sales service,you will be satisfied with our service and this HSTNN-Q78C battery, if you have any questions or feedbacks about our HP HSTNN-Q78C battery or our services please contact us directly, our customer service will reply you within 24 hours.