Be the first to have the 4th generation eneloops The new eneloop batteries are also rechargeable approximately 2,100 times, an increase of approximately 20% compared to previous eneloop batteries You need a battery, which is reliable even when having cold temperatures? Before eneloop was suitable for temperatures as low as -10°C - now even until -20°C. The new eneloop is even more environment-friendly as it is pre-charged with solar energy in Japan