Tesla is set to launch a battery heating feature at its V3 and V4 Supercharger stations. This enhancement will enable standard range Model 3 and Model Y RWD versions equipped with LFP batteries to charge up to four times quicker during winter months.
Performance in Cold Weather
Typically, LFP cells, like those found in portable power stations, do not perform as well in low temperatures. This might be a reason why Tesla has prioritized the Supercharger battery heating option specifically for the standard range Model Y and Model 3.
Innovative Heating Method
The new heating service differs from the usual preconditioning process that Tesla vehicles undergo when heading to a Supercharger. Instead of slowly warming up the battery pack, the Supercharger transmits ripple AC current straight through the individual LFP battery cells, effectively heating them during cold weather conditions.
“This is made possible by Tesla’s vertical integration and some of our brilliant engineers,” says Max de Zegher from Tesla. He notes that this new feature might remain exclusive to vehicles that utilize CATL LFP batteries.
Speeding Up Charging Times
The Supercharger battery heating option can allow a standard range Model Y to get back on the road up to four times faster than previously, addressing the main issue faced by LFP batteries. Elon Musk has previously discussed the slower charging speeds of Teslas with LFP batteries in extreme conditions:
In cold weather, LFP batteries charge at a slower rate compared to NCA batteries, and their range diminishes more than that of NCA batteries as well. It’s important to remember that both types of batteries perform poorly in cold weather, but LFP batteries are more affected. While on a road trip to a Supercharger, the vehicle will prewarm its batteries, which can help alleviate some of the slower charging issues. However, this means you may spend an additional six or seven minutes at the Supercharger during winter with LFP batteries. This could be a concern if you intend to rely on your vehicle for frequent cold weather supercharging, though it won’t affect you if you charge your car at home overnight.
Tesla’s LFP battery supplier, CATL, now has new LFP cells that do not experience slow charging in cold conditions. However, these specific cells are not used in the standard range Model 3 or Model Y. In the US, Tesla is primarily selling only long-range options, as its vehicles with Chinese LFP cells do not qualify for federal tax incentives.
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