Compatibility : Fit for Type 2611-41x (except 412), 434, 435, 45x (except 452 and 456) only

Battery Type: Ni-MH
Voltage: 9.6V
Capacity: 4000mAh
Product Type: OEM Battery (Brand New)
Condition: New, 1 year warranty!

This Laptop Battery Compatible Part Numbers:

91.45B28.001, BTP-1731, BTP-1831

Product Model:Extensa 500
Product Description: This notebook battery fit with:

ACER
Acer Extensa 500 Series
Extensa 500, Extensa 500DX, Extensa 501,
Extensa 501DX, Extensa 501T, Extensa 502,
Extensa 502D, Extensa 502DX, Extensa 502T,
Extensa 503, Extensa 503DX, Extensa 503T,
Extensa 505, Extensa 505DX, Extensa 506DX,
Extensa 507, Extensa 508

Acer TravelMate 500 Series
TravelMate 500, TravelMate 505, TravelMate 505DX,
TravelMate 506, TravelMate 506DX, TravelMate 506T,
TravelMate 507, TravelMate 507DX, TravelMate 507T

Acer TravelMate 508 Series
TravelMate 508, TravelMate 508T

IBM
IBM ThinkPad i1400 Series
ThinkPad i1400 Type 2611-41x (except 412),
ThinkPad i1400 Type 2611-434,
ThinkPad i1400 Type 2611-435,
ThinkPad i1400 Type 2611-45x (except 452 and 456),
ThinkPad i1410, ThinkPad i1411, ThinkPad i1416,
ThinkPad i1417, ThinkPad i1418, ThinkPad i1434,
ThinkPad i1435, ThinkPad i1436, ThinkPad i1450,
ThinkPad i1451, ThinkPad i1454

IBM ThinkPad i1500 Series
ThinkPad i1500 Type 2611-41x (except 412),
ThinkPad i1500 Type 2611-434,
ThinkPad i1500 Type 2611-435,
ThinkPad i1500 Type 2611-45x (except 452 and 456),
ThinkPad i1512, ThinkPad i1522