How much does this cost to the nearest dollar?

LOSSIGY 2Packs Lithium Battery, 1280WH with 100A BMS, Perfect Replace for Golf cart, Trolling Motor, Marine, Backup, RV, Solar, Off-Grid
About LOSSIGY Deep Cycle Battery The completely sealed lithium-ion cells lets you no longer worry about battery leakage. The BMS central system made of high-end chips can constantly monitor the battery status and perfectly protect your battery. The ABS shell made of polymer has strong waterproof and fireproof performance, so that it will not be corroded even in salt environment. You can safely use it in various waters and environments. Product Parameters Can be connected in series/ in parallel(up to 4) Total Capacity 100Ah Nominal Voltage 12.8V Charge Voltage Range Full Charge Voltage

Price is $640.00
Price: $639.99