4 Volt battery rca: Ch= RC-1199D (RC1199 D); 1-TP-1HE (1TP1H

4 Volt Battery Replacement. -Last year I purchased on ebay a very cute and very small transistor radio made by RCA Victor in 1960. The radio is powered by a 4 Volt battery, a size of an AA or S-14 cell. The 4 V batteries are not available any longer, I think. -I like to keep all my radios fully operational. I enjoy listening to them and love to show them and tell about them to those who are interested. So I had to solve the problem of the 4 Volt battery for the tiny radio. I purchased a generic Sony Camcorder Li Ion NP-FP50 battery for $6 /free shipping from Hong Kong/. The battery is built of two 3.7V. cells. The capacity is 900mAh, I believe. The diameter of the cell is 14mm and the length is 42mm. I soldered a small extension connector to the negative terminal of the cell to make it exactly the same size as an AA /S-14/ cell. /Please see the picture./ I charged the cell in a Li Ion battery charger. NiCad or NiMH battery chargers are not suitable. The fully charged cell has almost 4 Volts, enough to power the radio for many hours. The power consumption of the radio is about 30 mA. The shelf life of Li Ion rechargeable cells is very long. Much much longer than NiCads. 

• modified 4 Volt battery (92 KB)

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