In Stock. Izzo Gps, Navigator Battery Li-polymer Battery Fits Izzo, Swami 4000, Swami 4000 Golf Gpsa43094 3.7v, 1000mah CS-ZSW400SL $28.26 The batteries we supply almost always will match the existing batteries capacity. Sometimes there may be a difference due to the availability of components. If you have the battery model number this is probably the most sure fire way to identify the correct replacement battery for your device. Some batteries can easily be identified from just the model... Add to cart