Replacement li-ion 14.8V 4400mAh battery for IBM ThinkPad R40 R32, compatible parts IBM 02K6928 02K7052 02K7053 02K7054 02K7055 02K7056 02K7057 02K7058 02K7059 02K7060 02K7061 IB-R32L IB-R40L and IBM FRU 02K6928 02K7053 02K7057, longer battery life for entertainment and work, special for travelling.