Rechargeable batteries, 4 pcs
Regular batteries self-discharge over time, even if they are not used. Biltema's Low Self Discharge (LSD) is a new type of NiMH battery with low self discharge. It keeps 70 % of its charge and is ideal for toys, gaming consoles and other products that are use sporadically over a long period of time. Store LSD batteries fully-charged so to don't have to charge them prior to use. Replace regular batteries with LSD batteries, that you don't need to charge first.