This replacement power battery is 100% compatible with the COMPAQ 176780-B21. Our batteries and accessories are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. All batteries are tested for 100% Quality Control Assurance.

COMPAQ 176780-B21 Power Battery Li-ion 14.40V 4400.00mAh

COMPAQ 176780-B21 Battery Description:

• Please ensure the product(s) that you are going to buy fits the brand, model and part number of your device.
• This Li-ion 176780-B21 laptop battery pack is a rechargeable, removable, replacement Li-ion battery designed to work with COMPAQ laptop computer.
• 100% safe shopping guaranteed. Shipped in the same business day!
• We accept credit card payment through WorldPay or PayPal payment system (Use PayPal, gain 1% off the product price).
• We also accept Personal Cheque, Money Order and Bank Transfer, but Credit terms are not available.
• This laptop battery can replace the following part numbers of COMPAQ:
  

  COMPAQ:
  116314-001	138184-001	176778-001	176780-001
  176780-B21	177458-001	222114-001	222117-001
  234232-B21	239817-001	292560-001	292861-001
  293768-001	293768-002	293817-001	293876-001
  330936-001	330985-B21	331020-001	347732-001
  347736-001	388644-B21	388647-001

• This replacement battery is also compatible with the following models of COMPAQ:
  

  COMPAQ:
  Presario 1200AN	Presario 1200AP	Presario 1200AP-470011-846	Presario 1200AP-470011-847
  Presario 1200AP-470011-848	Presario 1200AP-470015-558	Presario 1200AP-470016-373	Presario 1200AP-470021-192
  Presario 1200AP-470021-205	Presario 1200AP-470021-207	Presario 1200CA	Presario 1200CA-1200CA
  Presario 1200CL	Presario 1200EA	Presario 1200EA-470016-814	Presario 1200EA-470016-815
  Presario 1200EA-470016-816	Presario 1200EA-470016-817	Presario 1200EA-470017-499	Presario 1200LA
  Presario 1200LA-470013-575	Presario 1200SC	Presario 1200SRP-470013-553	Presario 1200SRP-470016-807
  Presario 1200SRP-470018-783	Presario 1200SRP-470020-327	Presario 1200SRP-470020-329	Presario 1200SRP-470020-333
  Presario 1200SRP-470020-334	Presario 1200SRP-470020-335	Presario 1200SRP-470020-351	Presario 1200SRP-470020-360
  Presario 1200SRP-470020-364	Presario 1200SRP-470020-366	Presario 1200SRP-470020-386	Presario 1200SRP-470020-390
  Presario 1200SRP-470020-402	Presario 1200SRP-470020-404	Presario 1200SRP-470020-407	Presario 1200SRP-470020-424
  Presario 1200SRP-470020-427	Presario 1200SRP-470020-440	Presario 1200SRP-470020-441	Presario 1200SRP-470020-444
  Presario 1200SRP-470020-449	Presario 1200SRP-470023-468	Presario 1200T	Presario 1200T-12XL
  Presario 1200T-12XL2	Presario 1200T-470017-081	Presario 1200TC	Presario 1200TH
  Presario 1200US	Presario 1200-XL102	Presario 1200-XL104	Presario 1200-XL105
  Presario 1200-XL106	Presario 1200-XL107	Presario 1200-XL108	Presario 1200-XL110
  Presario 1200-XL111	Presario 1200Z	Presario 1200Z-1200Z A/900	Presario 1200Z-225168-999
  Presario 1200ZA	Presario 1200ZA-1200Z A/1.0G	Presario 1201AP	Presario 1201AP-470013-578
  Presario 1201EA	Presario 1201S	Presario 1201Z	Presario 1202EA
  Presario 1203CL	Presario 1205EA	Presario 1206R	Presario 1207
  Presario 1210	Presario 1210CA	Presario 1210EA	PRESARIO 1210JP
  Presario 1210LA	Presario 1210US	Presario 1211CA	Presario 1211EA
  Presario 1211LA	Presario 1212CL	Presario 1212EA	Presario 1213CL
  Presario 1213EA	Presario 1214	Presario 1214EA	Presario 1214FR
  Presario 1214NE	Presario 1214SR	Presario 1215	Presario 1215EA
  Presario 1215US	Presario 1216	Presario 1216EA	Presario 1216JP
  Presario 1216UK	Presario 1216US	Presario 1217JP	Presario 1219JP
  Presario 1220	PRESARIO 1220ES	Presario 1221	Presario 1230
  Presario 1232	Presario 1234	Presario 1235	Presario 1236
  Presario 1237	Presario 1240	Presario 1242	Presario 1244
  Presario 1246	Presario 1247	Presario 1250	Presario 1255
  Presario 1256	Presario 1260	Presario 1266	Presario 1267
  Presario 1270	Presario 1275	Presario 1277	Presario 1278
  Presario 1279	Presario 1280	Presario 12XL125	Presario 12XL126
  Presario 12XL127	Presario 12XL128	Presario 12XL201	Presario 12XL204
  Presario 12XL220	Presario 12XL223	Presario 12XL3	Presario 12XL300
  Presario 12XL300B	Presario 12XL304	Presario 12XL310	Presario 12XL320
  Presario 12XL323	Presario 12XL325	Presario 12XL326	Presario 12XL327
  Presario 12XL330	Presario 12XL400	Presario 12XL401	Presario 12XL403
  Presario 12XL404	Presario 12XL410	Presario 12XL420	Presario 12XL423
  Presario 12XL426	Presario 12XL427	Presario 12XL430	Presario 12XL500
  Presario 12XL501	Presario 12XL504	Presario 12XL505	Presario 12XL510
  Presario 12XL510A	Presario 12XL526	Presario 12XL527	Presario 12XL530
  Presario 1600S	Presario 1600-XL1	Presario 1600-XL140	Presario 1600-XL141
  Presario 1600-XL142	Presario 1600-XL143	Presario 1600-XL144	Presario 1600-XL145
  Presario 1600-XL146	Presario 1600-XL147	Presario 1600-XL150	Presario 1600-XL151
  Presario 1600-XL152	Presario 1600-XL153	Presario 1600-XL154	Presario 1600-XL155
  Presario 1610	Presario 1611	Presario 1620	Presario 1621
  Presario 1622	Presario 1625	Presario 1626	Presario 1640
  Presario 1650	Presario 1655	Presario 1660	Presario 1670
  Presario 1672	Presario 1675	Presario 1680	Presario 1681
  Presario 1685	Presario 1687	Presario 1688	Presario 1690
  Presario 1692	Presario 1693	Presario 1694	Presario 16XL255
  Presario 16XL256	Presario 16XL257	Presario 16XL258	Presario 1800EA
  Presario 1800FR	Presario 1800LA	PRESARIO 1800T	Presario 1800US
  Presario 1800-XL1	Presario 1800-XL180	Presario 1800-XL181	Presario 1800-XL186
  Presario 1800-XL190	Presario 1801S	Presario 1802FR	Presario 1805
  Presario 1810	Presario 1820	Presario 1825	Presario 1827
  Presario 1830	Presario 18XL191	Presario 18XL192	Presario 18XL280
  Presario 18XL380	Presario 18XL390	Presario 18XL580	Presario 18XL590
  Prosignia 150

  Note:
  

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COMPAQ 176780-B21 laptop battery usage tips:

• Please check your original COMPAQ 176780-B21 battery's OEM part number, COMPAQ 176780-B21 battery model number with our postings and picture before the purchase to make sure you get the correct battery.
• Fully charge this new COMPAQ 176780-B21 laptop battery pack before use. New laptop battery pack needs to be fully charged and discharged (cycled) a few times before it can be conditioned to full capacity.
• For longer this battery life, turn down the LCD brightness of your COMPAQ 176780-B21 laptop.
• Rechargeable laptop battery undergoes self-discharging when left unused. So your should store this COMPAQ 176780-B21 laptop battery pack in a fully charged stage.
• Fully drain and fully recharge this COMPAQ 176780-B21 laptop battery pack every few months.
• Don't short circuit the terminals or store this COMPAQ 176780-B21 laptop battery pack with metal parts.
• Proper Laptop Battery Care:
  The battery should be re-installed every 3-4 weeks and allowed to fully discharge. Leaving a battery in storage for longer than this without using could cause the battery to fully discharge as the circuitry of the battery itself consumes power.
• Proper Laptop Battery Care:
  Remember that when you have removed the battery from a laptop while using with an electrical outlet ¨C the automatic battery backup is no longer functional.