First of all, from your description, we can learn the following information
First, battery No. 1 is used, which is a cylindrical battery with a diameter of 34.2 mm and a height of 61.5 mm.
Second, the rated voltage of dry battery No.1 is 1.5V. If 4 cells are connected in series, the working voltage is 6V.
Second, we need to determine the size of the battery compartment. If the batteries are arranged in a straight line, the length of the battery compartment will reach 61.5×4=246 mm, or 24.6 cm. It seems too long, so it needs to be divided into two rows, with a length of 12.3 cm and a width of about 6.84 cm.
Again, let's determine the issue of lithium battery selection
First of all, lithium batteries are divided according to materials. There are two common types of ternary polymer and lithium iron phosphate.
Second, half of the ternary voltage is 3.6-3.7V. When two are connected in series, the voltage can reach 7.2V~7.4V. The voltage is high and not suitable for use radio. . The single voltage of the lithium iron diphosphate battery is 3.2V, and when connected in series, the voltage is 6.4V, which is slightly higher than the operating voltage of the radio and is more suitable.
Third, cylindrical lithium battery cells are generally 18650 (diameter 18mm, length 65mm), 21700 (diameter 21, length 70) and 26650 (diameter 26, height 65) are the most common . Obviously the 26650 is more suitable, so you can consider using it.
Finally, for lithium battery assembly, you can buy only 2 26650 batteries and connect them in series, or you can buy 4 batteries and connect them in series and then in parallel. In this way, the capacity. will be bigger andthe radio will work longer. At the same time, you also need to purchase a 2-string lithium iron phosphate battery protection board and use it with the corresponding 6.4V charger.
No.
Lithium batteries are batteries that use lithium metal or lithium alloy as negative electrode material and use non-aqueous electrolyte solution, so this battery is also called lithium battery. lithium metal.
Unlike other batteries, lithium batteries have the characteristics of high charge density, long life and high unit cost. Depending on the structural design and electrode materials, lithium batteries can produce voltages ranging from 1.5 V (equivalent to zinc-carbon or alkaline batteries) to 3.7 V. Lithium batteries are batteries containing metallic lithium as negative electrode, equalement called lithium metal batteries. It should be noted that lithium batteries are divided into primary batteries and secondary batteries according to different battery configurations.