Replacement Standard Horizon HX370S Battery + Charger Pack - 2

In this review the focus is on practical replacement power for Standard Horizon HX370S and FNB-83 radios. The Upstart Battery 2 pack reviewed here offers two 1600mAh NiMH batteries and a single charger that together supply reliable runtime for field use. The bottom line: this kit is for users who need an affordable, direct swap for NICD & NIMH battery systems and do not use Lithium-Ion packs. It is a straightforward replacement that prioritizes compatibility and capacity over OEM branding.

Key Features

• Compatibility: Works as a replacement for Standard Horizon HX370S and FNB-83 batteries, letting users fit the pack into existing radios without modification.
• Included charger: The single charger provided allows users to recharge both batteries (one at a time) using the same convenient charging base.
• 1600mAh capacity: Each battery provides 1600mAh at 7.2V, offering extended run time compared with lower capacity replacement cells.
• NiMH chemistry: Designed specifically for NiCd and NiMH batteries, ensuring correct charging behavior for those chemistries and avoiding Lithium-Ion use errors.
• Value pack: Two batteries plus one charger reduces downtime by keeping a fresh spare ready while the other charges.

Who It's For

This kit is best for hobbyists, mariners, and two-way radio users who already own Standard Horizon HX370S or FNB-83 compatible radios and want an economical replacement set rather than an OEM part. It suits users who rotate batteries during long shifts and need a spare ready while charging the other cell.

It is not appropriate for users who require OEM warranty coverage or those who use Lithium-Ion battery systems, since the charger is for NiCd and NiMH only. Professional operators seeking factory-authorized parts or integrated Lithium-Ion charging should look elsewhere.

Pros & Cons

Pros

• Two batteries provide a practical spare for continuous operation and reduced downtime.
• 1600mAh capacity balances runtime and weight for typical two-way radio use.
• The charger is tailored for NiMH and NiCd cells, supporting safe charging of the included batteries.

Cons

• Not an OEM part; any warranty is provided only by Upstart Battery rather than the original manufacturer.
• Will not charge Lithium-Ion batteries, so it is limited to NiMH and NiCd users.

Specifications

Brand	Upstart Battery
Quantity	2 batteries, 1 charger
Capacity	1600mAh
Voltage	7.2V
Chemistry	NiMH / NiCd compatible
Compatible Model	Standard Horizon HX370S / FNB-83

Our Verdict

For users needing a straightforward, cost-effective replacement for Standard Horizon HX370S or FNB-83 batteries, this Upstart Battery 2 pack with charger delivers sensible value. It provides reliable 1600mAh NiMH power and a spare battery for continuous use, but shoppers who require OEM warranty protection or Lithium-Ion charging should consider alternatives.

Frequently Asked Questions

Will this charger work with Lithium-Ion batteries?
No. The charger is for NiMH and NiCd batteries only and will not charge Lithium-Ion cells.

Is this an OEM Standard Horizon product?
No. This is an Upstart Battery brand replacement part and is not affiliated with the original manufacturer; warranties come from Upstart Battery.

How many batteries are included?
The pack includes two 1600mAh batteries and one charger, so you can keep a spare battery ready while the other charges.