Maintenance free battery, 100% non-spillable, safe design. High capacity, rechargeable SLA Battery by SigmasTek. Dimensions: 9.04 x 5.45 x 8.15 inches, 36 pounds. Ready to Ship! One Year Warranty. U.L. Recognized and CE Certified. Brand New & Factory Fresh. The battery is 100% compatible with Invacare TDX-SP rechargeable battery, you just need to reuse the original wire harness. This offer does not include the wire harness. You have to reuse your original parts. We supply only brand new, factory fresh, high quality batteries. We guarantee the best price and 100% compatibility with your Invacare TDX-SP model. Receive your SigmasTek replacement battery from US seller! The replacement SLA batteries also include a minimum of one year warranty.