Maintenance Free Motorcycle Battery Specs and Sizes

Maintenance Free

Maintenance free motorcycle battery specs…

Maintenance free batteries (also known as sealed batteries) usually come with the acid in a separate pack.
Once the acid has been poured into the battery and the plastic top has been firmly pressed into place, the battery is completely sealed and shouldn’t require any more topping up or have the acid levels checked.
Maintenance free batteries usually start with the code CTX (e.g. CTX9-BS) and often have the letters ‘BS’ on the end of the battery part number (the ‘BS’ part is used by most manufacturers to indicate that the battery is supplied with an acid bottle).

The 1st letter of the battery code is a manufacturers letter and can be different depending on the battery manufacturer (so YTX12-BS, CTX12-BS, GTX12-BS, DTX12-BS, ETX12-BS etc are all the same battery).
Maintenance free batteries normally have black case and a plastic strip pressed into the top.

Please note – The power outputs stated on this page will vary depending on the make and quality of the battery!

US: CTX16-BS
UK: YTX16-BS1261917610115610.3 / 4.70.784.7

Terminal layout

240

Battery Volts Number of cells Capacity (amps/hour) Length (mm) Width (mm) Height (mm) Weight (lb / kg) Acid volume (litre) Charging current (amp/hour) Terminal layout Cold cranking amps (CCA)
US: CTX4L-BS
UK: YTX4L-BS
12 6 3 114 71 86 2.9 / 1.3 0.18 0.4
Terminal layout
50
US: CTX5L-BS
UK: YTX5L-BS
12 6 4 114 71 106 3.5 / 1.6 0.24 0.5
Terminal layout
70
US: CTX7A-BS
UK: YTX7A-BS
12 6 6 150 87 94 5.3 / 2.4 0.33 0.7
Terminal layout
85
US: CTX7L-BS
UK: YTX7L-BS
12 6 6 114 71 131 5.1 / 2.3 0.33 0.6
Terminal layout
85
US: CTX9-BS
UK: YTX9-BS
12 6 8 150 87 105 5.4 / 2.4 0.40 0.9
Terminal layout
120
US: CTX9L-BS
UK: YTX9L-BS
12 6 8 150 87 105 5.4 / 2.4 0.40 0.9
Terminal layout
120
US: CTX12-BS
UK: YTX12-BS
12 6 10 150 87 130 7.5 / 3.4 0.60 1.2
Terminal layout
180
US: CTX14-BS
UK: YTX14-BS
12 6 12 150 87 145 8.1 / 3.7 0.70 1.4
Terminal layout
200
US: CTX14L-BS
UK: YTX14L-BS
12 6 12 136 91 168 8.2 / 3.7 0.70 1.4
Terminal layout
190
CT14-BS 12 6 12 136 91 168 8.2 / 3.7 0.70 1.4
Terminal layout
190
US: CTX16L-BS
UK: YTX16L-BS
12 6 19 176 101 156 10.3 / 4.7 0.78 4.7
Terminal layout
240
US: CTX18L-BS
UK: YTX18L-BS
12 6 20 206 91 164 11.2 / 5.1 0.93 2.0
Terminal layout
250
US: CTX20-BS
UK: YTX20-BS
12 6 18 175 87 155 11.2 / 5.1 0.93 1.8
Terminal layout
275
US: CTX20L-BS
UK: YTX20L-BS
12 6 18 175 87 155 11.2 / 5.1 0.93 1.8
Terminal layout
275
Maintenance free battery

Disclaimers:
The information provided on this page is ‘to the best of our knowledge’ and should not be taken as 100% accurate!!

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