4A Battery Charger & 1200A Jump Starter (MPN: 030-7020-WH)Most dead-battery situations happen when you’re not expecting them. A bike that sat a little too long, a truck that hasn’t moved in weeks, or a cold morning when the battery just doesn’t have it. The Battery Tender Charge N Start 4120 is built for those moments. It combines a smart 4-amp charger with a built-in jump starter, so you’re not hunting for cables or dragging another vehicle over just to get moving.It’s meant for garages and shops where space is limited and batteries of all types come through the door.
How it’s used in the real world
Acts like a normal Battery Tender when you’re maintaining or charging a battery
Jump-start function is there when a battery is too low to crank on its own
1200A output gives enough punch to turn over engines that would leave smaller boosters struggling
Saves time compared to swapping batteries or pulling out separate chargers and jump packs
Handy for bikes, cars, and light-duty equipment that rotate in and out of storage
It’s the kind of tool you don’t think about until the day you really need it.
Practical notes before plugging it in
Designed for use with lead-acid and compatible battery types where applicable
Charging output is 4 amps, which is a good middle ground for steady charging without rushing it
Jump-start feature is for starting assistance, not repeated cranking on a failing battery
Works best on batteries that are still in decent condition, even if they’re deeply discharged
As with any charging equipment, correct connection and polarity matter
Build and reliability notes
Battery Tender gear is known for straightforward controls and consistent performance. The Charge N Start 4120 keeps everything in one unit, reducing clutter and extra cords in the shop. Housing and internal components are built for regular use rather than occasional emergencies only.
Quick reference
Model: Charge N Start 4120
Charging Output: 4A
Jump Starting Power: 1200A
MPN: 030-7020-WH
If you’re dealing with multiple vehicles or just want one piece of equipment that covers both charging and starting, this unit keeps things simple without trying to do too much.
No compatible vehicles data available.
1 review for Battery Tender Charge N Start 4120 4A Battery Charger & 1200A Jump Starter
Rated 5 out of 5
Patrick Atkins –
This combo unit is awesome charges my batteries overnight and the jump start feature is powerful enough for my V-twin.
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Patrick Atkins –
This combo unit is awesome charges my batteries overnight and the jump start feature is powerful enough for my V-twin.