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YUASA Battery 6N42A-4-6V - Dry Cell, No Acid Pack 4220020

Battery Yuasa 6N42A-4-6V - Dry Cell/ No Acid Pack (20). Also available in set case quantities of 20.
  • £12.01 (Exc. VAT)
Order within for delivery from Tuesday 5th July
+ In Stock Now   |   Usually dispatched within 24 hours
CLICK & COLLECT ONLY Select your local dealer on checkout
FIND A STOCKIST Find your nearest dealer (not limited to Click & Collect)
TRADE CUSTOMER? Request an account application form

If acid is required (battery is provided dry with no acid and must be filled before use) please check with your chosen collection point/dealer that this service is provided prior to ordering. This service may incur an additional charge.

The Conventional 6 Volt battery is the industry standard for motorcycles, snowmobiles and ride-on mowers.

  • Specifically designed to protect against seepage and corrosion
  • Made to withstand vibration
  • Through-partition construction delivers maximum power while the unique sealed posts resist corrosion for a longer battery life

Please note: This battery should never be fitted on it's side. It is only suitable for vertical fitment

Most problems with batteries today are due to improper initial activation.
Newly activated batteries should always be charged before you install them into any motorcycle, otherwise they will lose at least 20% of their capacity. This will definitely result in a much shorter service life or other battery problems

  • Fill the battery to the indicated level
  • Charge the battery for three to five hours at the current equivalent of 1/10 of its rated capacity to get a full charge.
  • Failure caused by incorrect activation or charging is not covered by the warranty

Further research by GS-Yuasa shows that 95% of alleged problems occurring with batteries that have been in service for more than a couple of months and have been left standing without charge are caused by SULFATION. This is a condition where a crystal like material forms on the lead plates. When this chemical reaction happens, it is impossible to restore a full charge and the battery has to be replaced. This is not caused by a faulty battery, it is a fault with maintenance. Please ensure batteries are kept charged on a suitable charger when not in use


Fitment Summary:
For full fitment details in a searchable list please check the FITMENTS tab.

  • Honda: C 50ZZ, C 70ZZ, CB 50J, MT 50SP, MT 50SR, XL 125S, XL 185S, XL 250K0, XL 250K1, XL 250K2, XL 250K3, XL 250K4, XL 250K5, XL 250S, XL 250SA, XL 250SB, XL 250SZ, XL 500S
  • Yamaha: AG 100, AG 100 Farm Bike, RS 125, RS 125DX, RZ 1251GV

Product FAQs
Yuasa Battery Finder

As well as using our vehicle selector to find compatible batteries, you can also use the extensive Yuasa Battery Lookup tool at

Yuasa Battery Basics

View the Yuasa video guides on everything you need to know about your next Motorcycle battery:

  1. Battery Construction:
  2. How Batteries work:
  3. Selecting the correct battery:
  4. Battery charging:
  5. Battery installation:
  6. Battery Maintenance:
How do I charge my Yuasa battery?

Follow this simple Yuasa video on how to correctly charge your battery:

What does DC, CP, and WC mean?

Often abbreviated in the product name of batteries, e.g. "TTZ10S (CP)"

  • DC = Dry Charged (contains 1 battery, acid not included)
  • CP = Combipack (contains 1 battery and 1 acid pack)
  • WC = Wet Charged (contains 1 battery acid filled and charged)


Click & Collect Only

Select a collection point from our network of available dealers. You will be notified by the chosen dealer once your order is ready to collect, estimated time is 2-3 days (depending on national holidays and dealer opening hours).

  • Free for orders over £100
  • £11.95 fee for orders below £100



Standard Delivery

Orders will be despatched as follows: To business addresses only; £9.95 (Exc VAT) delivery charge (subject to change depending on account level); Free delivery with net order values of £100 and over (Exc VAT) to the UK Mainland; Orders to N. Ireland/Eire/Isle of Man/Scilly Isles by arrangement; other destinations phone for details; Typical delivery times of 1-2 working days.

Where possible, the Company will endeavour to meet special delivery requirements subject to any additional cost being borne by the Purchaser

Unfortunately, we do not delivery to addresses outside of mainland UK without prior agreement. Without prior agreement you may place an order for Products from outside the UK, but this order must be for delivery to an address in mainland UK unless arranged otherwise prior to your order.

Pallet Charges

Larger items may incur additional carriage charges, including but not limited to 4x4 and SUV tyres.


Read our full delivery policy here

Make Model Engine/Variant Year Notes
Honda XL 250 SZ 1979 None
Honda XL 250 SA 1980 None
Honda XL 250 SA 1981 None
Honda XL 500 S 1979 None
Honda XL 500 S 1980 None
Honda XL 500 S 1981 None
Yamaha RS 125 DX 1976 None
Yamaha RS 125 DX 1977 None
Yamaha RS 125 DX 1978 None
Yamaha RS 125 DX 1979 None
Yamaha RS 125 DX 1980 None
Honda MT 50 SP 1992 None
Honda MT 50 SR 1993 None
Honda XL 250 S 1978 None
Yamaha RZ 125 1GV 1985 None
Honda CB 50 J 1978 None
Honda CB 50 J 1979 None
Honda CB 50 J 1980 None
Honda CB 50 J 1981 None
Honda CB 50 J 1982 None
Honda CB 50 J 1983 None
Honda XL 125 S 1979 None
Honda XL 125 S 1980 None
Honda XL 125 S 1981 None
Honda XL 185 S 1979 None
Honda XL 185 S 1980 None
Honda XL 185 S 1981 None
Honda XL 185 S 1982 None
Honda XL 185 S 1983 None
Honda XL 500 S 1982 None
Honda C 50 ZZ 1979 None
Honda C 50 ZZ 1980 None
Honda C 50 ZZ 1981 None
Honda C 70 ZZ - Cub 1979 None
Honda C 70 ZZ - Cub 1980 None
Honda C 70 ZZ - Cub 1981 None
Honda C 70 ZZ - Cub 1982 None
Yamaha RS 125 1974 None
Yamaha RS 125 1975 None
Yamaha RS 125 DX 1981 None
Yamaha RS 125 DX 1982 None
Yamaha RS 125 DX 1983 None
Yamaha RS 125 DX 1984 None
Honda XL 250 K0 1972 None
Honda XL 250 K1 1973 None
Honda XL 250 K2 1974 None
Honda XL 250 K3 1975 None
Honda XL 250 K4 1976 None
Honda XL 250 K5 1977 None
Honda XL 250 SB 1982 None
Yamaha AG 100 1982 None
Yamaha AG 100 Farm Bike 1993 None
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