{"product_id":"victron-smart-a-lithium-ionen-200-ah-batterie-lifepo4-25-6v","title":"Victron Smart Lithium-Ion 200 Ah Battery LiFePO4 25.6V","description":"\u003ch2\u003eSpace- and weight-saving batteries with lithium iron phosphate technology from Victron\u003c\/h2\u003e \u003cp\u003e\u003cb\u003eWhy Lithium Iron Phosphate?\u003c\/b\u003e\u003cbr\u003e The Lithium Iron Phosphate (LiFePO4 or LFP) battery is the safest of the regular lithium iron battery types. The nominal voltage of an LFP cell is 3.2V (lead-acid: 2V\/cell). A 12.8V LFP battery therefore consists of 4 cells connected in series, and a 25.6V battery consists of 8 cells connected in series.\u003cbr\u003e \u003cbr\u003e \u003cb\u003eRobust\u003c\/b\u003e\u003cbr\u003e A lead-acid battery will fail prematurely due to sulfation in the following cases:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eIf it operates for a long time in an insufficiently charged state (i.e., if the battery is rarely or never fully charged).\u003c\/li\u003e \u003cli\u003eIf it is left in a partially charged or, even worse, completely discharged state (yacht or RV during winter).\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eAn LFP battery does not need to be fully charged. The operating life even increases slightly if the battery is only partially charged instead of fully charged. This is a significant advantage of LFP batteries compared to lead-acid batteries.\u003cbr\u003e Further advantages include a wide operating temperature range, excellent cycling, low internal resistance, and high efficiency (see below).\u003cbr\u003e The LFP battery is therefore the best choice for demanding use.\u003cbr\u003e \u003cbr\u003e \u003cb\u003eEfficient\u003c\/b\u003e\u003cbr\u003e In many applications (especially off-grid solar and\/or wind power systems), energy efficiency can be crucial.\u003cbr\u003e The energy efficiency of a charging cycle (discharging from 100% to 0% and recharging to 100%) of an average lead-acid battery is approximately 80%. In contrast, the energy efficiency of an LFP battery's charging cycle is 92%.\u003cbr\u003e The charging process of a lead-acid battery becomes particularly inefficient when the 80% state of charge mark is reached, leading to energy efficiencies of only 50%.\u003cbr\u003e In solar systems, this value is even lower because energy reserves for several days are required (the battery operates at a state of charge between 70% and 100%).\u003cbr\u003e An LFP battery, however, still achieves an energy efficiency of 90% even when in a shallow discharge state.\u003cbr\u003e \u003cbr\u003e \u003cb\u003eSize and Weight\u003c\/b\u003e\u003cbr\u003e Space savings of up to 70% Weight savings of up to 70%\u003cbr\u003e \u003cbr\u003e \u003cb\u003eExpensive?\u003c\/b\u003e\u003cbr\u003e LFP batteries are expensive compared to lead-acid batteries. However, the higher initial costs will more than pay off in demanding applications due to the longer operating life, high reliability, and excellent energy efficiency.\u003cbr\u003e \u003cbr\u003e \u003cb\u003eBluetooth\u003c\/b\u003e\u003cbr\u003e Cell voltages, temperature, and alarm status can be monitored via Bluetooth. This is very useful for detecting a (possible) problem such as cell imbalance.\u003cbr\u003e \u003cbr\u003e \u003cb\u003eBattery Management System (BMS)\u003c\/b\u003e\u003cbr\u003e The BMS can be connected to the BTVs, and its main functions include:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eInterrupting or shutting off the load if the voltage of a battery cell drops below 2.5 V.\u003c\/li\u003e \u003cli\u003eStopping the charging process if the voltage of a battery cell rises above 4.2 V.\u003c\/li\u003e \u003cli\u003eShutting down the system if the cell temperature exceeds 50 C.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eVictron's LFP batteries feature integrated cell balancing and cell monitoring functions. Up to ten batteries can be connected in parallel and up to four batteries in series, allowing for the assembly of a 48 V battery bank with up to 3000 Ah. An example wiring diagram can be found in the product images. The cell balancing\/monitoring function cables can be daisy-chained and must be connected to a Battery Management System (BMS).\u003c\/p\u003e\u003ch4\u003eDocuments \u0026amp; Downloads\u003c\/h4\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/media.wattstunde.de\/mediafiles\/PDF\/Elektronik\/Victron\/Batterien\/Datasheet-12,8-\u0026amp;-25,6-Volt-lithium-iron-phosphate-batteries-Smart-DE.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":57444428874110,"sku":"WS300-2027","price":3065.86,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0906\/7557\/7214\/files\/victron-smart-a-lithium-ionen-200-ah-batterie-lifepo4-256v.png?v=1779292635","url":"https:\/\/www.offroad-fittery.de\/en\/products\/victron-smart-a-lithium-ionen-200-ah-batterie-lifepo4-25-6v","provider":"Offroad-Fittery","version":"1.0","type":"link"}